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Curious Tilt of the Sun Traced To Undiscovered Planet (spacedaily.com)

An anonymous reader writes: Planet Nine - the undiscovered planet at the edge of the solar system that was predicted by the work of Caltech's Konstantin Batygin and Mike Brown in January 2016 -- appears to be responsible for the unusual tilt of the Sun, according to a new study. The large and distant planet may be adding a wobble to the solar system, giving the appearance that the Sun is tilted slightly. "Because Planet Nine is so massive and has an orbit tilted compared to the other planets, the solar system has no choice but to slowly twist out of alignment," says Elizabeth Bailey, a graduate student at Caltech and lead author of a study announcing the discovery. All of the planets orbit in a flat plane with respect to the Sun, roughly within a couple degrees of each other. That plane, however, rotates at a six-degree tilt with respect to the Sun -- giving the appearance that the Sun itself is cocked off at an angle. Until now, no one had found a compelling explanation to produce such an effect. "It's such a deep-rooted mystery and so difficult to explain that people just don't talk about it," says Brown, the Richard and Barbara Rosenberg Professor of Planetary Astronomy.

232 comments

  1. Just curious... by XxtraLarGe · · Score: 4, Interesting

    How is it that we have an undiscovered planet in our solar system, yet we're able to find earth-like planets orbiting stars that are light-years away?

    --
    Taking guns away from the 99% gives the 1% 100% of the power.
    1. Re:Just curious... by Maritz · · Score: 5, Insightful

      The far away ones are seen either with a wobble in the star (shows up as redshift/blueshift on a spectrograph) or the planet occludes the star and makes it dim measurably. That means the planet has to be in line of sight of the star. This planet can't be in line of sight between us and the sun, because it's far out. If it exists, of course.

      --
      I do not want your cheap brainburning drugs. They are useless for work. And I am a working man today.
    2. Re:Just curious... by Anonymous Coward · · Score: 4, Informative

      How is it that we have an undiscovered planet in our solar system, yet we're able to find earth-like planets orbiting stars that are light-years away?

      Most of those exoplanets are quite close to their respective stars, making them much easier to spot. On the other hand this planet is so far out and moving so slowly in its giant orbit that its difficult to spot it even moving and that's if you're lucky to be watching the spot it is currently in for a long time. The original discovery of Pluto was a happy accident in many ways.

    3. Re:Just curious... by Anonymous Coward · · Score: 0

      We often cannot observe planets in other solar systems directly, they are discovered by their affect on the objects we can observe. e.g. Stars

    4. Re:Just curious... by plopez · · Score: 3, Insightful

      Possibly due to perspective. If a solar system is far away, you can observe all of it. If an object is in the solar system *and* out of the elliptic it may well be hidden. The location of the other planet, which may have an orbital period of centuries, has to be in the correct place to be seen and you need to be looking for it. Just guessing.

      Now that there is evidence of a large object outside the elliptic I'm sure someone will try to calculate the period and approximate location of it. The fact it is out of the elliptic may explain why some comets are out of the elliptic.

      By the way, nice sig.

      --
      putting the 'B' in LGBTQ+
    5. Re:Just curious... by Anonymous Coward · · Score: 0

      Because when we discover those planets, we're just looking at tiny portions of the sky and finding out what we can see there.

      We have no idea where planet 9 is at, so we don't know what portion of the sky to look in.

    6. Re:Just curious... by Anonymous Coward · · Score: 5, Funny

      The same way we can observe the ass of that girl 3 rows in front during our astronomy lecture, but we can't see our own ass even if we're talking out of it.

    7. Re:Just curious... by Anonymous Coward · · Score: 0

      Uh, because stars shine, but planets orbiting beyond Pluto do not?

    8. Re:Just curious... by Anonymous Coward · · Score: 0

      This planet is not so close to the sun and we are not observing the sun as the planet occludes it from the outside of the solar system.

    9. Re:Just curious... by jeffb+(2.718) · · Score: 2

      Although if its orbit is eccentric enough, it could occlude the Sun on its way to perihelion. That would get the researchers really excited.

    10. Re:Just curious... by Serge_Tomiko · · Score: 1

      Obviously, this is all bullshit. You just coincidentally need that super special perfectly sited telescope on a mountain in Japan, which you will never be able to access to verify such bullshit claims.

      Every single day there is a news story about aliens.

      It's all mass propaganda. Soon, we'll have an announcement that aliens are real, and then the push to a one world government will commence in earnest.

    11. Re:Just curious... by Anonymous Coward · · Score: 0

      Those "earth like"planets are close enough to their stars that they affect the light that we see from them. They have more in common with Venus than with this hypothetical undiscovered planet.

    12. Re:Just curious... by Anonymous Coward · · Score: 1

      That would probably suck so much that my socks would come off without any effort on my behalf. Then, a while after the sock would start to burn. No more socks!

    13. Re:Just curious... by myrdos2 · · Score: 4, Informative

      XKCD has a good image to explain this.

    14. Re:Just curious... by Anonymous Coward · · Score: 0

      Kind of like the known affect this one has on our star?

    15. Re:Just curious... by Lumpy · · Score: 3, Informative

      And that is assuming it's a bright object reflecting a LOT of light from a very distant sun. If this thing is dark in color at all, the lumens available out at where they guess it is...

      One astrophysicist basically said, IT would be easier to spot a flashlight that is on and pointed at the earth out in the OOORT cloud than to directly observe a planet out there. They need to look for stars that are being occluded and see if we can create a dataset, but if it is beyond the oort cloud, the orbital period may be measured in 1000's of years and will be even hard yet to detect

      --
      Do not look at laser with remaining good eye.
    16. Re: Just curious... by Anonymous Coward · · Score: 0

      And perhaps we would crush racism if all of a sudden we had to work together in the wake of a common threat?

      I, for one, welcome my one world government and benevolent world wide dictators.

    17. Re:Just curious... by Anonymous Coward · · Score: 0

      How could it be in the line of sight between us and the sun? That would imply its in a lower orbit than earth.

    18. Re:Just curious... by wonkey_monkey · · Score: 1

      We can't detect any wobble it might impart to the Sun because we're orbiting around the Sun so we wouldn't detect the shift in frequency that gives it away. And we can't detect a transit because it will never pass between us and the Sun.

      And in any case, most exoplanets we've found are the heavy close-orbit ones, not the heavy distantly-orbiting ones.

      --
      systemd is Roko's Basilisk.
    19. Re:Just curious... by Kozar_The_Malignant · · Score: 4, Informative

      Here's what I get from the reporting on the original article by Batygin and Brown. Given the data, Planet Nine's orbital path is pretty well known. It is, however, way out there, which means that there is a lot of orbital length to search. The data do not give any hint as to where on the orbit Planet Nine might be. B&B speculate that it is not on the part of the orbital path that brings it closest to the sun, because there are good odds that all of the comet hunting scopes in the world would have spotted it by now. A good amount of telescope time is now being spent searching the further reaches of the orbit, and my guess is that it will be found within five years. If it exists, of course.

      --
      Some mornings it's hardly worth chewing through the restraints to get out of bed.
    20. Re:Just curious... by Gr8Apes · · Score: 1

      They need to look for stars that are being occluded and see if we can create a dataset, but if it is beyond the oort cloud, the orbital period may be measured in 1000's of years and will be even hard yet to detect

      I recall the suggested orbit for the "9th planet" was 19000 years. So it's way way out there. Finding it, provided it exists, is going to be challenging.

      --
      The cesspool just got a check and balance.
    21. Re:Just curious... by TheDarkMaster · · Score: 1

      Why someone would mark a perfectly valid question like this as "overrated"?

      --
      Religion: The greatest weapon of mass destruction of all time
    22. Re:Just curious... by phishybongwaters · · Score: 1

      except that you don't see it only the affects it has on the other objects in our solar system? I mean I get you and all, but put the tinfoil hat away, not everything is some false flag conspiracy that requires you to buy anything from Alex Jones. Every single day there is a news story about aliens? Is there? Cause I sure as hell haven't see anything. Oh, let me guess "info wars" right? P.S. I'm 110% sure this is not an extra planet, just like I was 110% sure every other time they "found" planet X. AND why is no one calling it Nibiru anymore?

    23. Re:Just curious... by XxtraLarGe · · Score: 3, Insightful

      Why someone would mark a perfectly valid question like this as "overrated"?

      Because someone who doesn't like me has mod points. I've seen many of my comments modded down across several different threads. From what I understand, by modding someone overrated, your mod can't be metamoderated, so you don't lose moderation opportunities. But, it's just a message board, so it really doesn't bother me. I've got "karma" to burn. One of the reasons I always quote a person I'm replying to: If someone is modded down below the threshold, people will still know what my reply is about.

      --
      Taking guns away from the 99% gives the 1% 100% of the power.
    24. Re:Just curious... by networkBoy · · Score: 2

      "Excited" is one word for it...
      I'm going with terrified though. ;)

      --
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    25. Re:Just curious... by NatasRevol · · Score: 1

      But shouldn't orbital mechanics give a decent clue as to where it is?

      --
      There are two types of people in the world: Those who crave closure
    26. Re:Just curious... by Anonymous Coward · · Score: 1

      BURN!

    27. Re:Just curious... by Bob+the+Super+Hamste · · Score: 2

      I would think it would give us an idea of where its orbit is but where in that orbit to currently find the planed would be difficult.

      --
      Time to offend someone
    28. Re:Just curious... by vel-ex-tech · · Score: 2

      AND why is no one calling it Nibiru anymore?

      JJ Trek into Fail was just that traumatizing. Nobody wants to remember it. Kind of ruined that name for the 9th/10th/Xth planet.

    29. Re:Just curious... by jellomizer · · Score: 2

      It is mostly due to Mathematical calculation vs. Visual observation.

      The Planets part of the Solar System have been found using visual observation. A Dark planet so far away would be nearly impossible to find.

      The Planets we found outside our solar system are from Stars that are having particular traits that that fit a mathematical model.

      So just as how we found the mysterious 9th real planet basing the observation of the sun. Vs looking into the darkness to see if we find something.

      If/When we do visually find it. I hope it isn't an upsidedown earth.

      --
      If something is so important that you feel the need to post it on the internet... It probably isn't that important.
    30. Re:Just curious... by peragrin · · Score: 1

      Have you looked at the size of those eco planets? Most mass i. The Jupiter range and are quite close to their host stars(like closer than Venus)

      There are exceptions but they are harder to spot.

      Lastly we don't know where to look so we have to guess

      --
      i thought once I was found, but it was only a dream.
    31. Re:Just curious... by Anonymous Coward · · Score: 0

      Aliens ARE real. Just ask John Podesta!

    32. Re:Just curious... by NatasRevol · · Score: 1

      I would think it should give us a pretty precise orbital path. Then analyze that closely.

      --
      There are two types of people in the world: Those who crave closure
    33. Re:Just curious... by MrKrillls · · Score: 1

      Orbital mechanics is how the conjecture came to be. But the calculations give only a very general idea of where to look.

      --
      Don't step on the baby.
    34. Re:Just curious... by Gr8Apes · · Score: 1

      It's a pretty imprecise suspected orbit, as we don't even know if it truly exists. Otherwise, it'd be pretty simple to track it down.

      --
      The cesspool just got a check and balance.
    35. Re:Just curious... by Anonymous Coward · · Score: 0

      I believe ecliptic is the word you're looking for, rather than elliptic.

      dom

    36. Re:Just curious... by idji · · Score: 1

      We are good at seeing planets closer than Mercury is to the Sun, basking in the light of their star. But this planet as SO FAR WAY OUT THERE beyond Pluto it is super cold and dark. It's easy to see a pinprick of light against black, but not a tiny black, slow moving (thousands of years for an orbit) object against a black sky.

    37. Re:Just curious... by nusuth · · Score: 1

      IANAA but I have an impractical idea that might work. Everything outside solar system is either redshifted or blueshifted by a large margin. If we use a very narrow band of spectrum for observation we may observe only stuff move relatively slowly wrt Earth. For example, if we are reasonable sure that any planet in our neighborhood would have some helium in it, just look at around 447.148 nm. Stuff near us move relatively slowly wrt Earth, so helium's absorption bands would be shifted only slightly. If we have a whole sky map at 447.148 nm and one at 447.147, subtracting the former from the latter would give you map of things that are something close by and has helium in it.

      --

      Gentlemen, you can't fight in here, this is the War Room!

    38. Re:Just curious... by fahrbot-bot · · Score: 2

      One astrophysicist basically said, IT would be easier to spot a flashlight that is on and pointed at the earth out in the OOORT cloud than to directly observe a planet out there.

      Clearly, the answer is to put a flashlight on this planet, pointed at Earth, so we can know where it is.

      --
      It must have been something you assimilated. . . .
    39. Re:Just curious... by Rakarra · · Score: 1

      Into Darkness was a sucky movie, but the Niburu scene was the only good part about it, and the only time the first two movies (didn't see the third) managed to capture some of the "spirit" of the original series.

    40. Re:Just curious... by techno-vampire · · Score: 1

      I'm not an orbital mechanic and ICBW, but wouldn't calculations based only on the Sun's tilt point to two locations on opposite sides? Wouldn't you need something else, such as perturbations of one of the other Outer Planets to narrow it down?

      --
      Good, inexpensive web hosting
    41. Re: Just curious... by Anonymous Coward · · Score: 0

      Pluto is not a planet

    42. Re: Just curious... by Anonymous Coward · · Score: 0

      That's what the Hubble replacement James Webb telescope will do

      https://en.m.wikipedia.org/wiki/James_Webb_Space_Telescope

    43. Re:Just curious... by joe_frisch · · Score: 1

      Its interesting. In principal we could detect the sun's wobble but looking at Doppler shifts to distant objects. The problem with planet 9 is that the orbital period is so long that it would take too long to get a data set.

      I don't know if anyone has measured the solar system wobble on shorter timescales. The information is probably already in planetary searches.

    44. Re: Just curious... by Anonymous Coward · · Score: 0

      Fuck you Donald!

    45. Re: Just curious... by Anonymous Coward · · Score: 0

      Only if they are white!

    46. Re: Just curious... by Anonymous Coward · · Score: 0

      They're not aliens, they're just undocumented!

    47. Re:Just curious... by Anonymous Coward · · Score: 0

      Bulls*it.
      If the planet was that large it's effect on the other planets would be large too. In fact larger.

    48. Re: Just curious... by Anonymous Coward · · Score: 0

      Pluto moves noticeably against the background stars in just a few hours.

    49. Re: Just curious... by Anonymous Coward · · Score: 0

      Good grief people, the word you want is "occulted" not "occluded"

    50. Re: Just curious... by pslytely+psycho · · Score: 1

      That's not Donald.
      Donald would be saying:
      "See! It's crooked! Crooked Sun! Just look at it! It's crooked!"

      --
      Donald Trump, on a crusade to make Nixon look respectable
    51. Re:Just curious... by Maritz · · Score: 1

      If by large you mean 'massive', it's worth bearing in mind that distance trumps all. You can't say what effect it has based on size alone. You need the distance. Yeah, this thing is supposed to be big, but it's also supposed to have a 20,000 year orbit. I don't care if it exists or not, I'm just interested in where the evidence goes.

      --
      I do not want your cheap brainburning drugs. They are useless for work. And I am a working man today.
    52. Re:Just curious... by SharpFang · · Score: 1

      Yeah, funny story that.

      "We've calculated Neptune movement and orbit as such requires a ninth planet to exist, in orbit roughly this, position roughly this..."

      "Hey, guys! You were right! We found it! Let's name it Pluto!"

      "But... uh, we made a mistake in our calculations. Neptune's orbit really doesn't need a ninth planet actually..."

      "But... we found it anyway?"

      --
      45 5F E1 04 22 CA 29 C4 93 3F 95 05 2B 79 2A B2
    53. Re:Just curious... by SharpFang · · Score: 1

      Rather distantly so - this particular effect is not really observable at interstellar distances. But the general idea stands.

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      45 5F E1 04 22 CA 29 C4 93 3F 95 05 2B 79 2A B2
    54. Re:Just curious... by SharpFang · · Score: 1

      A matter of budget. You need a lot of flashlights ;)

      Launch a whole lot of tiny probes that can do little beyond reporting their position back to Earth. Send them out in all directions. Observe how their trajectory curves. Any probe even remotely approaching the planet will go noticeably off-course.

      --
      45 5F E1 04 22 CA 29 C4 93 3F 95 05 2B 79 2A B2
    55. Re:Just curious... by SharpFang · · Score: 1

      A bit too many variables. Since we only know how it affects the rest of the system, we know it's massive and far, but not how massive and how far - a less massive object closer will have a similar effect to one more massive, farther. We can determine the plane, but not orbital radius.

      If it was within the plane of ecliptic, that wouldn't hurt too badly because we'd be able to observe its entire orbital plane, being pretty much within it, or only very little off. We can observe it occluding stars and determine its orbital speed - and then the rest of orbital elements that way. But if it's waaaay up or down there, it's only a brief moment twice a year that we cross its orbital plane; way too little time and way too much of sky to search - despite being just a "narrow strip". Wherever else we are, we have way, way more sky to cover for a chance to spot it, because the narrow strip grows into an enormous disk.

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      45 5F E1 04 22 CA 29 C4 93 3F 95 05 2B 79 2A B2
    56. Re:Just curious... by PlusFiveTroll · · Score: 1

      You have a problem.

      First, there are lots of little chunks of stuff that have helium in it. A huge number are very small, but close enough to out gas and show up in a low resolution version of your survey.

      That's where the problem comes in. This planet is very far out. If it is in the far reaches of its orbit, very little sunlight is going to hit the planet. You're going to have to capture very high resolution images to even get a few photons from this object. And they will be hidden by the myriad of closer objects.

    57. Re:Just curious... by Mal-2 · · Score: 1

      They found it because there is a whole bunch of Pluto-like objects out there, which is the whole reason it got demoted once this was recognized. Take ten thousand high-albedo objects (Pluto is at least partly high albedo), and say "point there, that's where we think it is" -- even if you really have no data, just a hunch -- and there's a good chance a dedicated observer will find something. They found Pluto not because it was Planet Nine, but because it was Dwarf Planet One of Thousands. While it was unlikely that they'd find that exact one, the chances of finding something substantially similar are much greater.

      --
      How is the Riemann zeta function like Trump rallies? Both have an endless number of trivial zeros.
    58. Re:Just curious... by Gr8Apes · · Score: 1

      You only have maybe the last decade or two of data on which to base an entire 5B year orbital mechanics history. That's like trying to determine how the last wave that hit your beach was started 100 years ago by a butterfly in China, or was it a penguin in Antartica?

      --
      The cesspool just got a check and balance.
    59. Re: Just curious... by Anonymous Coward · · Score: 0

      Well d'oh. This one's hiding behind the sun, obviously.

    60. Re:Just curious... by nusuth · · Score: 1

      I see your point. I think there is no getting around the fact that we would receive too little light from the planet. Discarding almost all of the photons coming from it is the best start for a solution, if the best result we could hope is to tell the planet together with all local junk from interstellar objects.

      --

      Gentlemen, you can't fight in here, this is the War Room!

    61. Re:Just curious... by BoogieChile · · Score: 1

      There are two main ways to detect planets. The first was is by occultation, where the planet passes in front of its parent star, causing a reduction in the amount of light reaching the observer. In effect, a solar eclipse, but the effect is much smaller. This method won't work here, because we actually occult the sun as seen from Planet X and not vice versa.

      The method that could be used is by the radial velocity method, where a star is moved in it's orbit by the planet orbiting it. The problem here is that Planet X is so far away, and its orbit is so long, that you would need to observe the sun for thousands of years for the movement to be discernible. The (currently) furthest known object from the sun, Sedna takes about eleven and a half thousand years to complete a single orbit, and Planet X is likely to be even further away that that.

    62. Re:Just curious... by SharpFang · · Score: 1

      They found it because it happened to be where the (faulty) predictions of Planet Nine foreseen a planet to be there.

      Look at the time gap between discovery of Pluto (1930) and the next Kuiper Belt dwarf planet (Varuna, 2000). The time gap is so large because people stopped looking for the "ninth planet" once the "Neptune's orbit necessitating ninth planet" theory was disproven. Yes, it was dumb luck that Pluto happened to be where the faulty theory predicted a planet to exist. Still, it was that theory that motivated the search resulting in the discovery. Columbus would have never discovered America if he didn't try to find the western route to India either.

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      45 5F E1 04 22 CA 29 C4 93 3F 95 05 2B 79 2A B2
    63. Re:Just curious... by RockDoctor · · Score: 1

      Now that there is evidence of a large object outside the elliptic I'm sure someone will try to calculate the period and approximate location of it.

      If you follow Brown or Batygin's twitter feeds, you'll find that they've just had a substantial chunk of observing time on one of the big Hawaiian light buckets doing exactly what you suggest. Hint : time on telescopes like this requires a very well-formulated proposal. It's valuable time. And when the fog rolls in ... it's dead time.

      --
      Birds are not dinosaur descendants;birds are dinosaurs, for all useful meanings of "birds", "are" and "dinosaurs"
    64. Re:Just curious... by RockDoctor · · Score: 1

      And that is assuming it's a bright object reflecting a LOT of light from a very distant sun. If this thing is dark in color at all, the lumens available out at where they guess it is...

      The best chance - if you read the papers - is in the fairly far IR, looking for remenant heat of formation from the assembly of the planet. If I remember the papers, which I did read.

      It has all been put up on Arxiv, and no small amount of it submitted to this site as news items.

      --
      Birds are not dinosaur descendants;birds are dinosaurs, for all useful meanings of "birds", "are" and "dinosaurs"
    65. Re:Just curious... by RockDoctor · · Score: 1

      Launch a whole lot of tiny probes that can do little beyond reporting their position back to Earth.

      How are these probes of yours going to know their position in space in order to report it back?

      Just a little question. A tiny little question. A really simple, basic, fundamental question. Got an answer?

      --
      Birds are not dinosaur descendants;birds are dinosaurs, for all useful meanings of "birds", "are" and "dinosaurs"
    66. Re:Just curious... by RockDoctor · · Score: 1

      IANAA but I have an impractical idea that might work. Everything outside solar system is either redshifted or blueshifted by a large margin.

      Your last sentence which I quote is where it breaks down. Not everything outside the solar system is considerably red- or blue-shifted w.r.t laboratory standards (at zero relative velocity). Most things that we can see in our galaxy have very little velocity relative to us, because most of the galaxy is invisible to us due to dust and gas in the plane of the galaxy. It's easier to see 10 million light years out of the galactic plane than to see a couple of thousand light years in the plane of the galaxy.

      Say that we look towards the galactic centre. Since we're in a nearly circular orbit around the centre of mass of the galaxy, our velocity relative to it is nearly zero. The same applies for any other objects near our radial line from th centre of mass of the galaxy.

      Nearby objects ahead of us and behind us in our orbits are also in near-circular orbits, and also have consequently low relative velocities.

      --
      Birds are not dinosaur descendants;birds are dinosaurs, for all useful meanings of "birds", "are" and "dinosaurs"
    67. Re:Just curious... by RockDoctor · · Score: 1

      The problem here is that Planet X is so far away, and its orbit is so long, that you would need to observe the sun for thousands of years for the movement to be discernible.

      This might work, if the output of the Sun was stable over that period of time. We don't know that.

      --
      Birds are not dinosaur descendants;birds are dinosaurs, for all useful meanings of "birds", "are" and "dinosaurs"
    68. Re:Just curious... by Mal-2 · · Score: 1

      Columbus re-discovering America is just an example of something that would have inevitably happened anyhow. It was previously "discovered" from the northwest tens of thousands of years earlier, and again by Polynesians sailing east, and by Vikings, and possibly by others as well. Columbus finding the place merely launched the Conquista. If it hadn't been him, it would have been someone else -- even if they had a more accurate concept of the size of the planet.

      --
      How is the Riemann zeta function like Trump rallies? Both have an endless number of trivial zeros.
    69. Re:Just curious... by MrKrillls · · Score: 1

      I have no idea what calculations based solely on sun tilt would yield. I'm guessing there are so many causal possibilities that there would be no single answer.

      If I get it right, observations noted that a number of large objects all seem to have highly eccentric orbits that "lean out" to one side of the sun. Further, their orbital periods are in integer ratios. From that information, the most likely explanation seems to be a very massive object who's orbit "leans" to the other side, with a very long orbital period. A lot of math there - over my head.

      If I get it right, a solar system like set of massive objects acts something like a mechanism in which orbital periods tend to become integer ratio bound.

      Reason being, that gravity can nudge an object (A) a little faster if the closest approach has (B) leading a little, also slowing (B) down a little, until there eventually becomes a time where close approaches tend not to have minimal net change on the system as a whole.

      It's like the clocks on the wall where multiple clocks put on a wall tend to end up synchronized and I think keep more consistent time than any one by itself. The vibration through the wall serves to nudge clocks to become synchronous.

      Likewise, orbital objects exchange energy by gravitational pull and act as a system that eventually tick tocks at a integer ratio time period.

      --
      Don't step on the baby.
    70. Re:Just curious... by Coren22 · · Score: 1

      Nibiru and Planet X are supposed to both pass through the orbit of Earth, this planet is so far out it is doubtful it will pass Pluto's orbit.

      --
      APK likes to ask for responses to the same things over and over. Maybe he just likes the responses?
    71. Re:Just curious... by SharpFang · · Score: 1

      A modestly-sized directional antenna - deployable "umbrella style". A pill-sized RTG. A good supercapacitor.

      Send out the signal of power comparable to that of Voyager 2, for 3 seconds every 8 hours. Charge the supercap in between the broadcasts. Since you don't have to send any actual data, just report own presence (the ground stations can triangulate the position to within meters basing on that), the signal can be much shorter.

      --
      45 5F E1 04 22 CA 29 C4 93 3F 95 05 2B 79 2A B2
    72. Re:Just curious... by RockDoctor · · Score: 1
      Errr, right. So the ground station now knows the time of arrival of the carrier wave. To a timing accuracy of one half of the wavelength of the carrier signal. For a 1m accuracy, that'd imply a wavelength of less than 2m, and a frequency of upwards of 150 MHz. That's no problem electronically.

      What sort of ground stations are you going to need. Oh right, you're doing triangulation - presumably by signal arrival timing variation. So we don't need to worry about Rayleigh criteria for the frequencies involved. You'd need 4 ground stations minimum (3 for a fix, one for error checking), and you'd need sufficient to have 4 on the appropriate face of the planet at any arrival time. So that's a minimum of 6 ground stations, distributed as octahedrally as possible. Doable.

      Now, the big question - how does the ground station know when the signal was transmitted? That is why the signal from GPS satellites contains the time of transmission in the signal packet. (I assume the same is true for GLONASS and Galileo ... GLONASS, confirmed ; not sure on Galileo, or on the Chinese system). So ... you've got to put a pretty good quality radiation hardened atomic clock quorum onto each of your satellites.

      A pill-sized RTG.

      Something like this. With RTGs there is an obvious relation between mass, power and half-life. The design linked above will produce 100W after 14 years, which is probably at the limit of acceptability, considering the distance this constellation is going to have to cover. However, at 45kg, that's a big pill to swallow.

      Smaller RTGs will have lower power output, or shorter lifetimes, or both. Unless there is some isotope of unobtanium with more desirable properties.

      A good supercapacitor.

      I was going to make comments about more unobtanium, but it seems that despite the Star Wars style name, electric double-layer capacitors are becoming available. Scanning the applications exampled in the Wikipedia article, I don't see anyone claiming better than a decade lifetime, but that's a credible technology gap to pass. I'm more worried about the radiation sensitivity of them - they're not happy with voltage spikes. I've not heard of them making it into space technology yet, but that's probably just timing. There are rocket scientists in the world after all. (Or maybe they've come up with other ways of managing power which obviate the need for radiation-sensitive components.)

      Now, how many of these are you going to need? I'm going to assume that they're all sped out using Jupiter gravity assists with the same sort of speed as New Horizons. So that's a 10 year time of flight to approach the search region. Something like 30 years to cover the projected perihelion interval (and depending on Planet 9's orbital eccentricity, 2x to 4x to cover the regions out to aphelion). (Incidentally, if we could start launching these tomorrow at 09:00, the telescopic searchers still have 10 years before they face any competition.)

      That gives a search volume of ... 7.98E+30 cu.km, IF Planet 9 has an orbital inclination similar to everything else in the Solar system (we explicitly don't know that - some authors are making serious arguments for Planet 9 being inclined at right angles to the main ecliptic plane. In that case the search volume goes up to the order of 2.2E+031 cu.km).

      How efficient would the search be? I'm just going to make a wild-arsed guess that if a probe passes within 10 million km of Planet 9, then it'll acquire a sufficient deflection to be detected. Total guess. So each probe has a search volume of around 3E+022. So you're going to need between 10^8 and 10^9 probes.

      Is there enough plutonium (or Unobtanium-115) to build the first 10 million RTGs? And launch capacity? Or do we need to do some serious telescope work to narrow down the range of possibilities? (Which has the additional advantage of returning data a decade or several before the space probe fleet could possibly start to return useful data.)

      --
      Birds are not dinosaur descendants;birds are dinosaurs, for all useful meanings of "birds", "are" and "dinosaurs"
    73. Re:Just curious... by SharpFang · · Score: 1

      1) It's already being done. Commonly.

      2) Something closer to this. The one you linked produces 128W continuously, plus 2KW of thermal energy. On that kind of power you could run continuous communication with Earth, not just bursts for a couple seconds per day.

      3) The probes being small, can be considerably accelerated - rocket equation works in both directions; tiny dry mass can afford a lot of extra delta-V. And you could use colloid thrusters or other similar extreme-ISp ion microthrusters to accelerate them a lot over long time using the RTG energy before it's needed to power the radio.

      4) I'm not willing to ballpark the number of the probes, because that number is precisely dependent on precision of ground stations to determine their position. Suffice to say Jupiter definitely exerts clearly detectable influence on probes in LEO - not something on the margin of detection threshold but actual clear readouts. So your ballpark (0.06AU) is way off. Consider each probe covering a "corridor" of 10AU radius a more likely figure and a rather conservative estimate.

      --
      45 5F E1 04 22 CA 29 C4 93 3F 95 05 2B 79 2A B2
  2. Back to 9 Planets by Anonymous Coward · · Score: 1

    Lets name it Pluto!

    1. Re:Back to 9 Planets by Maritz · · Score: 5, Funny

      Sorry, Pluto is taken.

      How about Pluto1088549?

      --
      I do not want your cheap brainburning drugs. They are useless for work. And I am a working man today.
    2. Re:Back to 9 Planets by Anonymous Coward · · Score: 1

      Given that this is 2016, I think we all know it is somehow Nibiru.

    3. Re:Back to 9 Planets by Kaenneth · · Score: 1

      x69x_Plut0_x420x

    4. Re:Back to 9 Planets by neoritter · · Score: 2

      I prefer calling it Janus, after the Roman god of "beginnings, gates, transitions, time, doorways, passages, and endings." As the presumably the most outer planet in our solar system, kind of fitting.

    5. Re:Back to 9 Planets by msk · · Score: 1

      Persephone, CaÃna, Antenora, Ptolemea, Judecca. Those are the names that planets nine through thirteen should be called.

    6. Re:Back to 9 Planets by GTRacer · · Score: 2

      Or maybe xNoScope_Pluto_Nubklrx?

      --
      Defending IP by destroying access to it? That makes sense, RIAA/MPAA. Go to the corner until you can play nice!
    7. Re:Back to 9 Planets by Anonymous Coward · · Score: 0

      A giant ice planet? Let's call it Elsa! ... or whatever the giant ice criature was called in Frozen.

    8. Re:Back to 9 Planets by Galaga88 · · Score: 1
    9. Re:Back to 9 Planets by Lumpy · · Score: 1

      Urectum... let's stick with the butt jokes started earlier.

      --
      Do not look at laser with remaining good eye.
    10. Re: Back to 9 Planets by Anonymous Coward · · Score: 0

      No it doesn't. The solar system is only things that orbit the sun.

    11. Re:Back to 9 Planets by Anonymous Coward · · Score: 0

      I prefer calling it Janus, after the Roman god of "beginnings, gates, transitions,

      Are you transitioning?

    12. Re:Back to 9 Planets by Quirkz · · Score: 2

      Marshmallow.

      Actually, I kind of like the sound of Planet Marshmallow.

    13. Re:Back to 9 Planets by phishybongwaters · · Score: 1

      what exactly are they teaching in school? Pokemon? I mean... this is slashdot so I'm expecting the cream of the crop. But that.... I just.... There are no words.... Please do not have children, and if you do, please never speak to them lest you pass on whatever brain eating disorder you must be suffering from.

    14. Re:Back to 9 Planets by Anonymous Coward · · Score: 0

      Neo-Pluto

    15. Re:Back to 9 Planets by narcc · · Score: 1

      this is slashdot so I'm expecting the cream of the crop.

      How foolish...

    16. Re:Back to 9 Planets by Zontar+The+Mindless · · Score: 2

      And to think we could have had Pluto, Mickey, Minnie, Donald, Daisy, and Goofy...

      --
      Il n'y a pas de Planet B.
    17. Re:Back to 9 Planets by Anonymous Coward · · Score: 0

      The stupid...it BURNS!

    18. Re:Back to 9 Planets by Anonymous Coward · · Score: 0

      Clearly the only correct name for "Planet 9" is @TheRealPluto.

    19. Re: Back to 9 Planets by Anonymous Coward · · Score: 1

      I was thinking Melancholia. But I've always been an optimist.

    20. Re:Back to 9 Planets by Anonymous Coward · · Score: 0

      Considering that in 1976 Zecharia Sitchin predicted a planet that's very much like this in Twelfth planet, I think it's only right to considering calling it Nibiru.
      We laughed for 40 years, I wonder how silly people will feel if it turns out that he was right.

    21. Re:Back to 9 Planets by Anonymous Coward · · Score: 0

      this is slashdot so I'm expecting the cream of the crop.

      How foolish...

      Depends on the kind of cream.

    22. Re:Back to 9 Planets by Zumbs · · Score: 1

      Janus is already in use as a moon of Saturn.

      --
      The truth may be out there, but lies are inside your head
    23. Re:Back to 9 Planets by neoritter · · Score: 1

      Bah, alright fine, since this planet is supposed to be huge and its nature is unknown right now, how about the counterpart to Jupiter, Summanus. He's the god of nocturnal thunder, his exact nature isn't really well defined, and at one point was thought to be referred more than Jupiter.

      Other possible picks, maybe Minerva or Bellona.

      And I checked this time, lol. Unless someone named a planetary feature on one of these gods, they should be free to use!

    24. Re: Back to 9 Planets by Anonymous Coward · · Score: 0

      Trump enjoys nude photos of boys

    25. Re:Back to 9 Planets by Anonymous Coward · · Score: 0

      Pluto McPlanetFace

    26. Re:Back to 9 Planets by pslytely+psycho · · Score: 1

      The obvious name should be BOB!

      http://www.imdb.com/title/tt0120913/quotes

      --
      Donald Trump, on a crusade to make Nixon look respectable
    27. Re:Back to 9 Planets by neoritter · · Score: 1

      Hurr hur they said butt.

  3. Pluto bitches by Virtucon · · Score: 2

    you call me a dwarf now, I'll tilt your sun..

    --
    Harrison's Postulate - "For every action there is an equal and opposite criticism"
    1. Re:Pluto bitches by Anonymous Coward · · Score: 0

      They're not talking about Pluto having anything to do with the tilting. It is a far larger body orbiting our sun, that has been hypothesized due to several quirks in observed orbit data even though we haven't yet directly seen it yet.

    2. Re:Pluto bitches by Anonymous Coward · · Score: 0

      Whoosh

    3. Re:Pluto bitches by MrKrillls · · Score: 1

      This one - the AC who speaks truth...

      --
      Don't step on the baby.
  4. According to FOX "News" by Anonymous Coward · · Score: 1

    The sun is tilting towards the left. Obviously it's rigged that way.

    1. Re:According to FOX "News" by Anonymous Coward · · Score: 0

      The sun is tilting towards the left. Obviously it's rigged that way.

      "Wrong. I'll only acknowledge this planet if it is named after me. It's probably ugly anyway, or else it wouldn't still be hiding."

    2. Re:According to FOX "News" by Anonymous Coward · · Score: 0

      Yeah?
      But suns legs are tilting towards right?

    3. Re:According to FOX "News" by ChrisMaple · · Score: 1

      You want a planet named "Anonymous Coward"?

      I approve.

      --
      Contribute to civilization: ari.aynrand.org/donate
  5. HAH! Idiots! There already are 9 planets! by Anonymous Coward · · Score: 0

    Damn pot-smoking tree-hugging sandal-wearing hippies.

  6. Only planet 9? by plopez · · Score: 1

    I'm holding out for planet 10. When are we going?

    --
    putting the 'B' in LGBTQ+
    1. Re:Only planet 9? by Anonymous Coward · · Score: 1

      Real soon!

    2. Re:Only planet 9? by Anonymous Coward · · Score: 1, Informative

      I'm sure Elon Musk is already beating his dick off about how we need to go there

    3. Re:Only planet 9? by npslider · · Score: 1

      Planet Ten... more properly read as Planet X

    4. Re:Only planet 9? by uvajed_ekil · · Score: 0

      THIS got a 2 for informative? Maybe discovery of Planet 9 is a harbinger of doom, for Slashdot at least.

      --
      This is a hacked account, for which the owner can not be held responsible.
  7. the sun is round how is it tilted by avandesande · · Score: 1

    Would have been nice if they explained that... is it the sun's rotational plane?

    --
    love is just extroverted narcissism
    1. Re:the sun is round how is it tilted by 110010001000 · · Score: 1

      Correct...they are talking about the spin axis of the Sun.

    2. Re:the sun is round how is it tilted by TFlan91 · · Score: 3, Insightful

      The Earth is round and also tilted... same concept.

    3. Re:the sun is round how is it tilted by Opyros · · Score: 3, Insightful

      Well, neither one is perfectly round; both are oblate spheroids, though this is trickier to measure in the case of the Sun.

    4. Re:the sun is round how is it tilted by tomhath · · Score: 1

      The Sun's axis is not perpendicular to the plane of the known planets' orbits. Whether it's the Sun or the plane that's tilted is a philosophical question.

    5. Re:the sun is round how is it tilted by Anonymous Coward · · Score: 0

      Your head is not perfectly round either, nor is it filled with any sense. It is a stupid spheroid.

    6. Re:the sun is round how is it tilted by Anonymous Coward · · Score: 0

      Yo momma round, too and she also tilted.

    7. Re:the sun is round how is it tilted by Kozar_The_Malignant · · Score: 2

      >Whether it's the Sun or the plane that's tilted is a philosophical question.

      Actually, it's a physics question. The answer seems to be that the planets' orbital plane, the ecliptic, is tilted. Given the relative mass and positions of the bodies involved, it is much easier fir the hypothetical planet to affect the ecliptic than the sun.

      --
      Some mornings it's hardly worth chewing through the restraints to get out of bed.
    8. Re:the sun is round how is it tilted by Anonymous Coward · · Score: 0

      Whoosh!

    9. Re:the sun is round how is it tilted by Anonymous Coward · · Score: 0

      Things don't go "whoosh!" in space!

    10. Re:the sun is round how is it tilted by Anonymous Coward · · Score: 0

      Does anyone know how they determine the axis of the sun and its rotational speed? The surface of the sun is constantly changing so it would be hard to measure based on something observable on its surface. Does it rotate in the same directions as the known planets move? How long does it take to rotate once?

    11. Re:the sun is round how is it tilted by Anonymous Coward · · Score: 0

      Look at the motion of enough sunspots over time, and it seems like you'd be able to infer the overall rotational axis of the Sun with a high degree of precision.

      IIRC the rotational period is about 24 Earth days.

    12. Re:the sun is round how is it tilted by TFlan91 · · Score: 1

      Silence!

      (whoosh sounds cooler...)

    13. Re:the sun is round how is it tilted by idji · · Score: 1

      the orbital plane of the solar system (all the planets and asteroids) is 6 to the Sun's equator. The question is - are the plaents 6 off or is the sun 6 off?

    14. Re: the sun is round how is it tilted by Anonymous Coward · · Score: 0

      Different latitudes on the Sun rotate at different rates, so defining the period is somewhat tricky. It is 25 days at the equator and about 36 days near the poles. You can measure it by watching features like sunspots move.

    15. Re:the sun is round how is it tilted by RockDoctor · · Score: 1

      The answer seems to be that the planets' orbital plane, the ecliptic, is tilted.

      It's worse than that. "THE ecliptic" is the projection of the Earth's orbit onto the plane of the sky as seen from the centre of the Sun. Or (equivalently), the projection of the Sun's position onto the plane of the sky from the Earth.

      For every object in orbit around the Sun, there is a different ecliptic, similarly defined. We relate them to the Earth-Sun ecliptic purely for the convenience that we are mostly resident on Earth.

      Now consider a particle on the Sun's equator, which for some completely incomprehensible reason (let's call it the Noodly Appendage) sits exactly stationary (whatever that means). As seen from the centre of mass of the Sun, it will trace a line on the plane of the sky in the same way as the ecliptics discussed above. That plane is not coincident with the Earth-ecliptic, nor with any of the other planet's respective ecliptics. They do cluster on the plane of the sky - within about 6 degrees as seen from the centre of mass of the Solar System - but they are not coincident. Add Pluto - 17 degrees spread now. Add Planet 9 ... 25 to 30 degrees.

      Until recently, planet hunting took place on that 6 degree band. Pluto's discovery tripled the size of the search area. Planet 9 increases it around 6-fold again.

      It's a big problem.

      --
      Birds are not dinosaur descendants;birds are dinosaurs, for all useful meanings of "birds", "are" and "dinosaurs"
  8. Astronomical compromise by Anonymous Coward · · Score: 0

    Since Pluto was originally a calculated mass based on its affecting of other objects, and was the ninth planet, and this magical mystery mass is calculated by its effects on other objects and is a proposed ninth planet, can we do the obvious course?

    Rename the dwarf planet formerly known as Pluto and its co-orbitals "Cerberus." Name this Pluto. Update the art in the elementary school general science books. Teach a little more about dwarf planets in school, because Ceres and Eris are interesting enough to get some class time.

  9. Say this aloud: "It's so massive..." by starglider29a · · Score: 4, Interesting

    "How massive is it?"
    "It's so massive that even at an insane distance, this Oort Cloud body can out-twist the masses of both Jupiter AND Saturn."

    Wait? How massive is it? How is it able to tilt the axis of the sun, since tilting an axis is a TIDAL action? IMHO (as a degreed rocket scientist) that Occam's Razor would indicate that it's easier to shift the orbital planes of the planets, rather than tidally torque the sun. Remember, for the tidal action, the Planet IX must be very close to Sol to work its magic.

    1. Re:Say this aloud: "It's so massive..." by Anonymous Coward · · Score: 0

      This all assumes there's not a disk of massive, slow moving planets in that orbit, much further out than us..

    2. Re:Say this aloud: "It's so massive..." by Anonymous Coward · · Score: 0

      Your momma is so massive she can out-twist the masses of both jupiter and saturn.
      Man, if we only had comebacks like that when I was in grade school...

    3. Re:Say this aloud: "It's so massive..." by Anonymous Coward · · Score: 0

      > All of the planets orbit in a flat plane with respect to the Sun, roughly within a couple degrees of each other. That plane, however, rotates at a six-degree tilt with respect to the Sun -- giving the appearance that the Sun itself is cocked off at an angle.

      Literally from the fucking summary.

      Again.

      > That plane, however, rotates at a six-degree tilt with respect to the Sun -- giving the appearance that the Sun itself is cocked off at an angle.

    4. Re:Say this aloud: "It's so massive..." by Anonymous Coward · · Score: 0

      Just massive enough to Make the career of an ambitious young graduate student.

    5. Re:Say this aloud: "It's so massive..." by Anonymous Coward · · Score: 0

      I'm hoping it's a solar-mass black hole (sun's companion star---whose nova gave our solar system enough heavy elements to form the planets).

    6. Re:Say this aloud: "It's so massive..." by sexconker · · Score: 0

      If your degree is genuine, you should have also bitched about the "the solar system has no choice but to slowly twist out of alignment" bullshit.

      It'll slowly twist into alignment. It'll just be an oscillating alignment or an alignment you weren't expecting.

    7. Re:Say this aloud: "It's so massive..." by mysticgoat · · Score: 4, Interesting

      A more careful reading of the article reveals that what is being tilted is the plane of the ecliptic. From a geocentric point of view, that appears to be a tilt of the Sun's axis, but to an observer outside the solar system, it is the plane of the orbits of all the known "non-dwarf" planets that is tilted. (IIRC, Pluto's orbit is outside the plane of the ecliptic-- which is part of the reason it took so long to find it after the maths showed it must exist.)

      Do we have enough data to estimate the orbital period of Planet IX? If so, it may be possible to correlate its changing angle to the plane of the ecliptic with long term changes in Earth climates. It would seem that during the thousands of years when Planet IX is near the plane of the ecliptic, the Earth's orbit would become more oval. Currently Earth is closest to the Sun (and moving faster in its orbit) around January 3, give or take a day; and most distant around July 3 (moving most slowly in its orbit). This causes Summer in the northern hemisphere to be around 4 days longer than Summer in the southern hemisphere. If Planet IX can cause a tilt of the planetary orbits at this time, then when it is in line with the plane of the ecliptic the Earth should see northern Summers significantly longer than southern Summers (and southern Winters longer than northern Winters).

    8. Re:Say this aloud: "It's so massive..." by Anonymous Coward · · Score: 0

      That's interesting, but this isn't rocket science.

    9. Re:Say this aloud: "It's so massive..." by Anonymous Coward · · Score: 0

      Sure, but my degree is old enough that I've lived to see the imagery from Pluto turned into a 'smiley face holding a heart'. Anthromophization of Sol & planets dates back to at least Kellogg's Raisin Bran boxes. Probably longer.

    10. Re:Say this aloud: "It's so massive..." by Anonymous Coward · · Score: 0

      Yo mama so massive, she make the whole solar system tilt.

    11. Re:Say this aloud: "It's so massive..." by Anonymous Coward · · Score: 1

      Fair enough. Allow me to re-phrase my initial question:

      Wait? How massive is it? So massive that being only 5-20 Earth masses AND 500 AU's out and it is able to tilt the orbits of Jupiter (317.8 Earth masses) AND Saturn (95.2 Earth masses)?

      BTW, it IS rocket science when you discuss plane changes of orbits. delta-V = delta-V. Rockets merely perform their delta-V maneuvers in a shorter time frame from Oort Cloud bodies

    12. Re:Say this aloud: "It's so massive..." by pezpunk · · Score: 1

      was that a joke? Anthropomorphization of Sol and the planets probably predates civilization. they were originally thought to be Gods, after all.

      --
      i could live a little longer in this prison
    13. Re:Say this aloud: "It's so massive..." by Teun · · Score: 2

      Thus implying we escaped a black hole...

      --
      "The likes of Facebook and WhatsApp are free to those whose privacy is of zero value."
    14. Re:Say this aloud: "It's so massive..." by Anonymous Coward · · Score: 0

      assuming a zero position from which there's this 6 deg offset, are we not saying that we suspect that we 'caught' this thing a certain number of its orbits ago?

      if so, would this 'catching' not happen at perigee and be visible in orbital distortions affecting at least the visible planets? e.g. something a bit more chaotic than we have today? .. alternatively, could this be behind plutos orbit? would it not have messed up the locked orbits of ura/nep?

      razor or no, either version of this tilt explanation sounds a bit too designed/ concocted to me.

    15. Re:Say this aloud: "It's so massive..." by Anonymous Coward · · Score: 0

      Because when it swoops in it's like Jupiter speeding by like a bullet (not sure what the astronomical metaphor would be) and closer to the sun than Mercury.

    16. Re:Say this aloud: "It's so massive..." by ventsyv · · Score: 1

      That was my reaction as well. The article states that planet nine is "about 10 times the size of Earth" - which I took to mean it has a diameter of 79,000 miles. For reference, Jupiter's diameter is ~ 86,000 miles. The article also states that the planet has an "orbit that is about 20 times farther from the Sun on average than Neptune's". That translate to around 600 AU. Assuming planet nine has Jupiter's mass: http://astro.unl.edu/classacti... Assuming Jupite's size, but Earth density (roughly 5x greater) : http://astro.unl.edu/classacti... To me that doesn't make sense.

    17. Re:Say this aloud: "It's so massive..." by ventsyv · · Score: 1

      Sorry, thought I'll link to the equation with the proper masses. First I used M1 = M2 = 1.90E27, then I tried M1=9.0E27 M2=1.90E27 and in both cases the acceleration was E-11.

    18. Re:Say this aloud: "It's so massive..." by Anonymous Coward · · Score: 0

      That's called deification.

    19. Re:Say this aloud: "It's so massive..." by Anonymous Coward · · Score: 0

      Thus implying we escaped a black hole...

      ...or just haven't fallen into it yet., but we're circling the drain.

    20. Re:Say this aloud: "It's so massive..." by Anonymous Coward · · Score: 0

      Planet Nine's gravitational influence is too weak to change things on a scale of thousands of years, which is why the article claims that it explains the tilt of the Sun (on a scale of billions of years). If it also explained Earth's historical climate, then they would have mentioned it.

    21. Re: Say this aloud: "It's so massive..." by Anonymous Coward · · Score: 0

      Oort cloud bodies don't generally perform delta v maneuvers. Their average v never changes.

    22. Re:Say this aloud: "It's so massive..." by Reziac · · Score: 1

      My first thought was to wonder if this "massive planet" is actually a dead star. Has there ever been any evidence that this was once a binary system?

      --
      ~REZ~ #43301. Who'd fake being me anyway?
    23. Re:Say this aloud: "It's so massive..." by cthulhu11 · · Score: 1

      IIRC finding Pluto was an accident, the claimed gravitational effects weren't in fact caused by it if they existed at all. I could be remembering this incorrectly.

    24. Re:Say this aloud: "It's so massive..." by mysticgoat · · Score: 1

      I'm reaching way back into my long term memory, but IIRC, the existence of Pluto was predicted from disturbances in the orbits of Neptune and Uranus. However it was not where astronomers were looking for it, but further from the ecliptic than anyone expected. I believe it was first seen by a comet hunter. So that was a happy accident.

      I was taught back in the day that Neptune's existence was first postulated from disturbances in Uranus' orbit, and Pluto was first inferred because Neptune did not account for all of Uranus' deviation from the expected path. I was taught this some 3 or 4 decades before we even knew about Charon. It sounds like we now know that Pluto is not massive enough to account for deviations. So I guess Pluto's discovery was one of those occasions when you look for something, but by accident find something else that at first looks like what you looking for. So that kind of accident.

    25. Re:Say this aloud: "It's so massive..." by mysticgoat · · Score: 1

      The article states that what is postulated is a planet ten times the mass of Earth. That is way less than the mass of any kind of star.

    26. Re:Say this aloud: "It's so massive..." by RockDoctor · · Score: 1

      Has there ever been any evidence that this was once a binary system?

      None. The Sun matches the behaviour of similarly massed stars very closely. While about half of all stars are in multiples (and so about 1/3 of star systems are multiple), no evidence of the Sun having a companion star has been reported.

      If a putative companion were comparable in size to the Sun, than we'd see it by night. In fact, we'd not really have a night. (ACC played with that in one of the Space Odyssey sequels, IIRC)

      If th putative companion were smaller than the Sun, it'd have to be considerably smaller to not be obvious. Smaller stars develop more slowly and last for longer, so it would still be visible. That relation lasts all the way down to the bottom end of "stars" at around 80 Jupiter-masses, when we get into the brown dwarfs. And even for them, we can model the evolution of temperature (from heat released on formation from infalling material) against time, and say "there isn't anything bright enough out there". (We do have adequate whole-sky IR surveys.)

      Get down to Jupiter-mass and smaller (Brown-Batygin propose a Planet 9 of around 10 Earth masses/ 1 Neptune mass/ 0.03 Jupiter mass) and the temperatures and luminosities continue to decrease, but remain potentially observable (Brown has recently been complaining about the weather on Hawaii, blinding his telescope time looking for exactly this). Unfortunately, there are other similar-looking sources on the sky, at greater distances than the putative Planet 9, which is going to complicate interpretation of the data.

      Astronomers do not reject the idea of "the Sun's companion", "Niburu", or whatever you want to call it out of caprice, malice to SF authors, or because their Mufti tells them to. The hypothesis has been rejected because observational evidence that should be visible if the hypothesis were correct has been looked for and is not there.

      --
      Birds are not dinosaur descendants;birds are dinosaurs, for all useful meanings of "birds", "are" and "dinosaurs"
    27. Re:Say this aloud: "It's so massive..." by RockDoctor · · Score: 1

      I believe it was first seen by a comet hunter. So that was a happy accident.

      Your memory is faulty, or your original sources were incorrect. Pluto was discovered as the result of a multi-year search programme by the Lowell Observatory, looking for Pluto using calculations made by it's founder (and funder), Lowell. Clyde Tombaugh was hired by the observatory as an observer, and specifically assigned to perform this task. It was as accidental as something completely intentional.

      People certainly tried to predict the existence of both Neptune and later Pluto from discrepancies in the orbits of inner planets. And while this approach has the potential to work, it remains unclear if either of the discoveries were more than coincidence. Tombaugh performed a comprehensive search of the anti-solar point, which scans the entire sky once per year (obviously). This covered the areas which Lowell predicted, and a lot of other sky too. By putting the hoped-for object in the darkest sky, the odds of detection are improved.

      Charon had nothing to do with the discovery of Pluto. However, Charon's discovery did finally allow the mass of Pluto (and Charon) to be determined accurately for the first time, finding it to be around 1/1000 of earlier estimates.

      To have been taught about the discovery of Pluto 3-4 decades before the discovery of Charon, you'd be remembering things you were taught between 1938 and 1948, putting you in your 90s, and possibly the oldest Slashdot reader I've commented to. What did you do in the War?

      --
      Birds are not dinosaur descendants;birds are dinosaurs, for all useful meanings of "birds", "are" and "dinosaurs"
    28. Re:Say this aloud: "It's so massive..." by Reziac · · Score: 1

      I meant, is it possible that this hypothetical giant pulling-us-out-of-alignment planet is actually a dead dwarf star (dead long enough to have effectively zero luminosity and be therefore invisible), and if so was it a binary or a captive?

      Cuz seems to me it's got to be more massive than any of the known planets to have this much effect.

      --
      ~REZ~ #43301. Who'd fake being me anyway?
    29. Re:Say this aloud: "It's so massive..." by mysticgoat · · Score: 1

      Your guess of my age is off by a little more than 2 decades. It turns out that Charon was discovered much earlier than I had realized (in 1978, not circa 1998 when I became aware of it) during a time in my life when I was concerned with trying to make a 10 acre hobby farm profitable ---or at least a break-even activity--- to the exclusion of my astronomy hobby. With the information I gave you, your estimate of my age was a good one. My facts were wrong.

      One of the things I really missed when I moved from the cold, clear winter nights of New England to cloudy skies of western Oregon was star gazing. The four inch reflector telescope that gave me many pleasurable nights in high school did not make the trip out west, but instead went to my brother. Now that I am spending a handful of nights each year under the starry skies of eastern Oregon, I miss it, and I'm thinking of replacing it, perhaps with one of the new-fangled computer driven 'scopes. That would accept a camera. Thoughts on this, anyone?

    30. Re:Say this aloud: "It's so massive..." by RockDoctor · · Score: 1
      The solar system is not old enough - by billions or tens of billions of years - for a brown dwarf which formed at the same time as the rest of the solar system to have cooled to the point that recent decades of whole-sky IR surveys couldn't see it. Even planets as small as the Brown-Batygin proposal for Planet 9 (~10*Earth-mass) would have noticeable IR emission.

      (One of the weirder things about Jupiter mass and larger planets is that their diameter and therefore surface area and therefore heat-loss rate changes little between Jupiter mass and deuterium-ignition mass @ ~75 Jupiter-mass. So loss of heat-of-formation takes longer than you'd expect.)

      For the solar system to have captured a cold brown dwarf (or black dwarf, or Jupiter mass planet, or even a back hole ; why not ; the only relevant factor is mass) between the stabilisation of plantary orbits at around 1 billion years after origin and today, there would have been a massive disruption of the inner and outer solar system as the interloper passed through to where it would need to mutually interact with the Sun and some other large body. You need the third body to take angular momentum and energy out of the system, otherwise the interloper will leave the system after it's inelastic (energy conserving) interaction with the Sun. This is a result that was worked out in the 18th or 19th century, by hand, as people tried to work out the implications of Laplace's proposed methods for origin of the solar system.

      Sorry, but the Solar system is pretty boring. OTOH, if it weren't a boring place, we'd probably have died out before getting an oxygenated atmosphere.

      --
      Birds are not dinosaur descendants;birds are dinosaurs, for all useful meanings of "birds", "are" and "dinosaurs"
    31. Re:Say this aloud: "It's so massive..." by Reziac · · Score: 1

      Very interesting, thanks. So where did this proposed planetary mass come from?

      BTW, love your tagline... puts birds in a new perspective.

      --
      ~REZ~ #43301. Who'd fake being me anyway?
    32. Re:Say this aloud: "It's so massive..." by RockDoctor · · Score: 1

      With the information I gave you, your estimate of my age was a good one.

      I put a good few minutes (and edits) into working it out.

      My facts were wrong.

      You're a bolder person than most Slashdotters for being able to admit it.

      Thoughts on "one of the computer-controlled" scopes : one of my colleagues who has better skies than me for practical astronomy brought a little Meade "goto"scope about a dozen years ago (ETX-80 or ETX-90, I forget ; whichever came first), liked it a lot, and upgraded after a couple of years to the 125mm (4in~) version which he also likes. That and a decent tripod, a few fittings and he's routinely turning out cloud photos (noctilucents in particular), air-show photos, and occasional lunar photos that he's very happy with.

      On the basis of that experience, I'd decided that if I did buy such a scope, I'd go direct for the 125mm version.

      But I suspect that I'd get more productive use from an account with a Pro-Am telescope that is operated over the Internet. I really should look at that again - not really followed up on it since my last bout of consideration last year.

      --
      Birds are not dinosaur descendants;birds are dinosaurs, for all useful meanings of "birds", "are" and "dinosaurs"
    33. Re:Say this aloud: "It's so massive..." by RockDoctor · · Score: 1

      Very interesting, thanks. So where did this proposed planetary mass come from?

      The Brown-Batygin Planet 9 (there are other proposals), at about 10 Earth-masses (~= 0.03 Jupiter masses), is proposed as a primordial part of the solar system, possibly with it's perihelion raised by interactions with the gas giants (i.e. Jupiter and it's sidekick Saturn, sideline-cheering from Neptune and Uranus) during the 500-700 million years (after origin of the Solar system) of re-shuffling which the inner planets saw as the "Late Heavy Bombardment". Their estimates (published in about March this year IIRC - the papers are on Arxiv) suggest that such a planet may remain visible in the IR - just - and they're just conducted an observing campaign in Hawaii which I assume was targetting just this hypothesis. In fact (fiddles with Skyglobe), just from the clock and the observatory, you can deduce that they're looking at RAs of 07 to about 21H. (Don't ask me to convert that into solar longitudes in my head!)

      BTW, love your tagline... puts birds in a new perspective.

      It's intended to. But it's probably 5 years since I've changed it. It's as subtle as an ostrich beak to the gonads (an experience to be avoided, according to the only one-eyed man I know who has had the experience).

      --
      Birds are not dinosaur descendants;birds are dinosaurs, for all useful meanings of "birds", "are" and "dinosaurs"
    34. Re:Say this aloud: "It's so massive..." by mysticgoat · · Score: 1

      Thoughts on "one of the computer-controlled" scopes : one of my colleagues who has better skies than me for practical astronomy brought a little Meade "goto"scope about a dozen years ago (ETX-80 or ETX-90, I forget ; whichever came first), liked it a lot, and upgraded after a couple of years to the 125mm (4in~) version which he also likes. That and a decent tripod, a few fittings and he's routinely turning out cloud photos (noctilucents in particular), air-show photos, and occasional lunar photos that he's very happy with.

      Thank you! This is very useful information.

      But I suspect that I'd get more productive use from an account with a Pro-Am telescope that is operated over the Internet. I really should look at that again - not really followed up on it since my last bout of consideration last year.

      Ah, a possibility that I had not considered. I will look into that. But the most profound observation I have ever made was seeing the look on a youngster's face after he had directly viewed the moons of Jupiter for the first time. That is the most significant use of a telescope that I have ever done, and I would like to repeat it.

    35. Re:Say this aloud: "It's so massive..." by RockDoctor · · Score: 1

      But the most profound observation I have ever made was seeing the look on a youngster's face after he had directly viewed the moons of Jupiter for the first time. That is the most significant use of a telescope that I have ever done, and I would like to repeat it.

      There's a guy does that in a corner of Fountain Square (which isn't square, but does have fountains) in Baku. Nice guy. Speaks about 3 more words of English than I do (or did, then) of Russian.

      --
      Birds are not dinosaur descendants;birds are dinosaurs, for all useful meanings of "birds", "are" and "dinosaurs"
  10. Re:This Is The Question by 110010001000 · · Score: 1

    This planet is likely 6x the distance from the sun to pluto. It would be difficult to find. I'm sure there are more than one undiscovered planets in our system.

  11. Re:This Is The Question by Anonymous Coward · · Score: 0

    For perspective, "so massive" is still less massive than any of the other gas giants in our solar system.

  12. Planet nine from outer space? by Anonymous Coward · · Score: 1

    I knew Ed Wood was a genius of the cinema but he also predicted the future! I suggest we call it Angora.

    1. Re:Planet nine from outer space? by Anonymous Coward · · Score: 1

      Plan 9 was the greatest Sci-Fi film ever made until it was remade as 2001: A Space Odyssey, in which incarnation it has yet to be surpassed.

  13. Re:This Is The Question by Anonymous Coward · · Score: 0

    I don't even know where to begin with all the ignorance on display in this comment... Maybe start by reading about the difference between the visible spectrum and what Hubble does?

  14. no really, "Why is there a watermelon there?" by Anonymous Coward · · Score: 0

    Where are we going?
    Planet 10!
    When?
    Real soon !

  15. Just don't call it LV-426 by swb · · Score: 3, Funny

    That would be a bad omen.

  16. Re:Do you have any idea how douchey your sig is? by Anonymous Coward · · Score: 0, Troll

    Not a difficult guess, I mean, Trump has the support of 35% of Americans and 0% of anyone else outside of Russia and ISIS. Law of averages says any random person you meet who isn't obviously a flaming racist is not a Trump supporter.

  17. Re:Do you have any idea how douchey your sig is? by Anonymous Coward · · Score: 0

    maybe he's referring to his waist or height.
    get your mind out of the gutter, you pig :-)

  18. Re:This Is The Question by Anonymous Coward · · Score: 0

    Distance. Planet Nine is estimated to be between 200 and 1200 AU. For comparison, Pluto only varies between 30 and 50 AU.

  19. Orbiting black hole by Tyr07 · · Score: 1

    It's further than you think it is but much closer than you'd ever like a black hole to be.

    It's not currently active (E.G nothing is currently falling into it, no gases etc) so it's not very easy to detect. It also isn't large enough to easily notice the bending light,

  20. Global Warming is due to 9th planet!! by cayenne8 · · Score: 0
    Ok, I've come up with it...

    Global Warming is the fault of the mysterious 9th planet!!!

    It is leaning the sun towards the earth on that "wobble"..and hence we're getting warmer!!

    Whew...great. Now I can go back to 'normal' life with big gas sucking engine cars, leaving the lights on..WITH nice incandescent bulbs, etc.

    Doesn't it feel better with the pressure off us (mankind)??

    ;)

    --
    Light travels faster than sound. This is why some people appear bright until you hear them speak.........
    1. Re:Global Warming is due to 9th planet!! by bbr_505 · · Score: 1

      Ok, I've come up with it...

      Climate Change is the fault of the mysterious 9th planet!!!

      FTFY

    2. Re:Global Warming is due to 9th planet!! by narcc · · Score: 5, Funny

      We can do better:

      The mysterious 9th planet was caused by Climate Change!

    3. Re:Global Warming is due to 9th planet!! by Anonymous Coward · · Score: 0

      Perhaps not a 9th planet, but the gravitational pull of the milky way?

    4. Re:Global Warming is due to 9th planet!! by stardaemon · · Score: 1

      Personally, I blame the IAU for bad definitions.

      --
      The only way to stay sane in an insane world, is to be mad yourself...
  21. real reason by micahraleigh · · Score: 1

    The real reason for the tilt of the sun is to secure more grant money for watching the stars float by.

  22. Misleading thread title. by Anonymous Coward · · Score: 0

    Its not the sun that's tilted, its the orbital planes of the planets. Its even stated in the summary"

    "All of the planets orbit in a flat plane with respect to the Sun, roughly within a couple degrees of each other. That plane, however, rotates at a six-degree tilt with respect to the Sun -- giving the appearance that the Sun itself is cocked off at an angle. "

  23. Nemesis by Feneric · · Score: 1

    Is this reminding anyone else of the old theory of an second sun in our system who's eccentric orbit through the Kuiper Belt could be blamed for sending out showers of debris that helped create mass extinctions?

    1. Re:Nemesis by Anonymous Coward · · Score: 0

      Yes. Glad someone remembers that theory besides me.

    2. Re:Nemesis by Anonymous Coward · · Score: 0

      whose, not who's.

  24. primordial black hole by Anonymous Coward · · Score: 0

    Seems to fit one of the mass profiles of a primordial black hole. Would be very hard to detect. Or a cloaked ship...

    1. Re:primordial black hole by pezpunk · · Score: 1

      maybe both. the Romulans use an artificial singularity to power their starships. i never considered that parking one way out at the ass end of the solar system's parking lot would throw entire system out of wack, though.

      --
      i could live a little longer in this prison
    2. Re:primordial black hole by Anonymous Coward · · Score: 0

      Assuming we're still talking about a gravitational singularity, that sounds retarded. It would be like trying to use Earth's gravitation as a power source.

  25. Phantasy Star fans... by CresCoJeff · · Score: 1

    ...rejoice! There's still a chance they'll call it Rykros

  26. That's Planet X you insensitive clod! by davidwr · · Score: 1

    This thing was around before Pluto got demoted, so we should call it "planet 10" or "planet X" and leave "Planet 9" as "deleted" from the list to avoid confusion.

    I prefer "X" because "X" is cool.

    --
    Knowledge is how to play a game, intelligence is how to win, wisdom is knowing what game to play.
  27. Re:This Is The Question by Anonymous Coward · · Score: 0

    Do you really have to puff yourself up with anon posts? And before you deny it the IP address matches.

    ~Slashdot staff.

  28. If they can observe its gravitational effect.... by mark-t · · Score: 2

    ... then they must surely know what direction it lies in, from the sun. Working backwards from there, they should be able to narrow the area to search sufficiently that they ought to at least figure out exactly where they need to be looking to find this object.

  29. Re:This Is The Question by KingMotley · · Score: 1

    Maybe it's his mom.

  30. Re:If they can observe its gravitational effect... by Anonymous Coward · · Score: 3, Insightful

    Too many variables. The mass of the planet. Its angular tilt. Its angular path/velocity. They don't know exactly where to look. Computer modelling suggested the existence of this planet, but even if we're able to predict its orbital path correctly that's still going to be a literal 360 degree arc of the sky needing to be searched. Always assuming of course that the purported ninth planet isn't currently occluded by the Sun.
    Something as far out as this is purported to be is going to be nearly impossible to spot. It's not getting any light from the Sun to speak of, so it'll be visually black. It's also far enough out that it will be too small to occlude anything visually, and any gravitational lensing it produces would be insignificant against the background.
    We're not going to find this without a major event happening. Something like a rogue asteroid detected swinging in towards the sun from somewhere out in the Oort cloud. Something like that, angled from 6 degrees away from the ecliptic, would suggest gravitational deflection from this ninth planet, and would actually give us one specific direction to search in.

  31. Re: This Is The Question by Anonymous Coward · · Score: 0

    Um... Hubble is nearly all visible.

  32. We Travel through a Crowded Galaxy by Yergle143 · · Score: 1

    ...and pass close to other stars. Furthermore the Sun probably evolved in a densely packed globular cluster. The solar system is therefore susceptible to random and drastic gravitational chaos. No need to invoke the presence of giant invisible constant companion planets. Rather consider a periodic drive by shooting wreaking mayhem and havoc in the Oort cloud.

    1. Re:We Travel through a Crowded Galaxy by RockDoctor · · Score: 1

      We Travel through a Crowded Galaxy ... and pass close to other stars. Furthermore the Sun probably evolved in a densely packed globular cluster.

      Not a globular cluster. They're a different cluster of stars. Probably the Sun did form in a molecular cloud with many others - see for example, the modern Orion star-forming region. The light from the largest and brightest of the cluster's stars would then have dispersed the remaining gas and dust of the cloud (see both the Orion nebulae and the "Pillars of Creation" photo done by Hubble), eventually leaving an open cluster (see Pleiades, or Praesepe - the Beehive Cluster). And eventually, the cluster would have dispersed to the barely detectable (such as the

      https://en.wikipedia.org/wiki/Ursa_Major_Moving_Group

      ) before dispersing beyond the detectable.

      Astronomers are looking for stars of the same age, chemistry and motions as the Sun, as potential stars formed in the same molecular cloud. But TTBOMK, they haven't found an example.

      Since formation, the Sun - and it's cohort - will have orbited the galaxy on the order of 20 times. So even small initial relative motions would have thoroughly dispersed them by now.

      All of which is a typology of different types of stellar cluster. But globular clusters are a different beast, not on that typology.

      --
      Birds are not dinosaur descendants;birds are dinosaurs, for all useful meanings of "birds", "are" and "dinosaurs"
  33. naming by Anonymous Coward · · Score: 0

    I hope they call it Hades when they find it.

  34. Re:If they can observe its gravitational effect... by slew · · Score: 2

    ... then they must surely know what direction it lies in, from the sun. Working backwards from there, they should be able to narrow the area to search sufficiently that they ought to at least figure out exactly where they need to be looking to find this object.

    The researchers did not infer the existence of this new planet from looking at the sun tilt, the tilt was reasoned to be potentially explainable by a theorized planet that we haven't discovered yet.

    The planet in question was inferred by looking at the statistical orbital distribution of Kuiper Belt Objects. They have a general idea of it's orbital inclination for this mysterious new planet they only have a general range of mass (~10x earth) and orbital distance (~20x Neptune's orbit). That makes a pretty big chunk of space to search for a relatively small object that is not luminous among very slowly moving objects (~15K year orbit).

    The original analysis that suggested this new planet is currently only statistical using orbital dynamics, not some specific N-body problem they are solving. They are only attempting to estimate the potential orbital objects that could cause of perturbation of the Sedna-like objects and KBOs relative to long term evolution of orbits. AFAIK, to do their analysis they replaced the orbit of the planet with equivalent massive "wires" that traced currently know orbits because the planets orbit in a timescale much shorter than the proposed planet (and thus exchange angular momentum between themselves and a distant perturb-er which they are analyzing at different timescale). Statistic analysis also showed it likely to have a perihelion opposite to the aggregate distribution of the KBOs. This means they only have a few orbital parameters for this object relative to long-term orbital evolution, not a realistic way of determining where along this 10K-20K year orbit it actually is today.

  35. Can someone please expalin? by The+Grim+Reefer · · Score: 1

    It's been quite a few years since I've been in school, and I don't use astrophysics or orbital mechanics for work. But according to TFA this planet is only 10 times the size of the earth (I'm assuming they mean mass) and it's orbit is 20 times more distant than Neptune. It's believed to be 30 degrees off of the orbital plane of the other planets. It seems like a fairly small object at that distance to cause a 6 degree axial tilt in something as large as the sun. Thanks in advance.

  36. Planet TEN as in 10, decimal. by Hognoxious · · Score: 1

    TEN, you fucking cunts.

    Signed,
            Pluto.

    --
    Confucius say, "Find worm in apple - bad. Find half a worm - worse."
    1. Re:Planet TEN as in 10, decimal. by quenda · · Score: 1

      TEN, you fucking cunts.

      Signed,

              Pluto.

      ELEVEN, you self-righteous potty-mouthed wanker. You were 130 years too late to be planet number 9.
      Go back to the Kuiper belt, and stop stealing our orbits.

      Signed,
              Ceres.

    2. Re:Planet TEN as in 10, decimal. by RockDoctor · · Score: 1
      Planet 1665, you innumerate baboons.
      Signed, Felix.

      (After minor planet 1664 Felix (1929 CD), discovered February 4, 1929 by E. Delporte ; the last Solar system body discovered before Pluto, TTBOMK).

      Yes, this is an example of reductio ad absurdam .

      --
      Birds are not dinosaur descendants;birds are dinosaurs, for all useful meanings of "birds", "are" and "dinosaurs"
    3. Re:Planet TEN as in 10, decimal. by quenda · · Score: 1

      Fair enough. Of course Ceres *was* considered a planet for a long time before being demoted, just like Pluto.

    4. Re:Planet TEN as in 10, decimal. by RockDoctor · · Score: 1
      Certainly true about Ceres.

      However, the reductio ad absurdam is that if you don't have a criterion for differentiating between a star, a planet, and a minor body (dwarf planet, mote, dust, asteroid, whatever), then you shove lots of different bodies into one classification. Kind of like including dolphins and whales as "fish" because they live in the sea and aren't worms.

      From my geologist's point of view, I'd probably have been happier with the dividing line being put at the "forms a sphere under self-gravity", but I'm a geologist not an astronomer and haven't put in the 20-odd years of research work to have had an invite to the IAU bun-fest and had a vote. And I'm content with the criteria that they've developed, whereas the criterion I suggest would have put Pluto at around planet #20 at it's time of discovery.

      --
      Birds are not dinosaur descendants;birds are dinosaurs, for all useful meanings of "birds", "are" and "dinosaurs"
  37. Consistent with Semerian sources by Anonymous Coward · · Score: 0

    The existence of far off planet is consistent with Sumerian sources: http://www.bibliotecapleyades.net/sumer_anunnaki/esp_sumer_annunaki22.htm

    I don't know what I believe either the study from TFA or Zecharia Sitchin (author from link above), but the consistency is a bit curious.

    1. Re:Consistent with Semerian sources by pseudorand · · Score: 1

      It's all true, I was there where Nibiru (our mystery planet) and Tiamat (the remnant of which became Earth) collided. And it was a conspiracy too. I know because everyone's home insurance had a interplanetary collision exclusion. WTF! Why would they even put that in there -- unless they knew it was going to happen.

      I knew I should have voted for Enlil. He may have been a bully, but at least he wasn't selling influence to the highest bidder like EA.

      - Ashurbanipal

  38. Sitchin by jbmartin6 · · Score: 2

    I am becoming afraid. It looks more and more like Zechariah Sitchin was right.

    --
    This posting is provided 'AS IS' without warranty of any kind, implied or otherwise.
  39. Correction... by Anonymous Coward · · Score: 0

    The original post meant to say "mysterious planet 10" as everyone knows that Pluto is the 9th planet and always will be.

  40. predicted by s-f by Anonymous Coward · · Score: 0

    Predicted by isaac asimov,
    predicted by joe haldeman.
    propbably by other too.

  41. Re: This Is The Question by Anonymous Coward · · Score: 0

    Pluto is not a planet

    Lameness filter fodder here

  42. Nibiru by Anonymous Coward · · Score: 0

    Is real bitches! All hail our galactic birthplace and overlord!

  43. Too faint to image by Anonymous Coward · · Score: 0

    I heard Brown talk about the search in Denver last year. If it is at the distant part of its orbit, as musch as 20,000 AU it would be magnitude mid-20s way to faint to directly image.

  44. 500 times General Relativity error by Anonymous Coward · · Score: 0

    General Relativity explained the 40-second frame-dragging effect on Mercury. A six degree tilt is 500 times larger than this.

  45. Re: This Is The Question by Anonymous Coward · · Score: 0

    Pluto was not demoted from planet status based on its size. It was demoted based on not clearing its orbit of other objects, namely Neptune.

  46. Re: This Is The Question by Anonymous Coward · · Score: 0

    Saturn is not a greased up anal plug.

    See, I can make non-sequiturs too!

  47. Re: This Is The Question by ChrisMaple · · Score: 1

    Good humorous observation.

    It seems to me that the requirement for clearing its orbit is unreasonable, given the eccentricity of Pluto's orbit. Pluto would have to clear a ring 2 billion miles wide. Also, Pluto's orbit is inclined 17 degrees off the orbital plane of other planets, so it would also have to clear the ring of the other planets' orbital disk at the diameter where it intersects Pluto's. A planet in an non-inclined circular orbit only has to clear a ring of a few tens of thousands of miles.

    --
    Contribute to civilization: ari.aynrand.org/donate
  48. Orbit? by ChrisMaple · · Score: 1

    Given the vagueness of the estimates and the proposed distance and orbital period, can we actually say with a good probability that this object is actually orbiting the sun? We haven't been doing really precise measurements of planet's orbits all that long. Couldn't it just be an object passing by the solar system that isn't even orbiting?

    --
    Contribute to civilization: ari.aynrand.org/donate
  49. Asimov by Anonymous Coward · · Score: 0
  50. Re:Do you have any idea how douchey your sig is? by david_thornley · · Score: 1

    There is publicly available evidence that Russia was behind it. It's not nearly conclusive evidence. There is a plausible motive for messing in US elections. So, are you stupid enough to dismiss the possibility? Or stupid enough to trust the Russians not to make changes in what they leak?

    --
    "When you have eliminated the unacceptable, whatever is left, however improbable, must be the truthiness" - Holmes