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Pluto — a Complex and Changing World

astroengine writes "After 4 years of processing the highest resolution photographs the Hubble Space Telescope could muster, we now have the highest resolution view of Pluto's surface ever produced. Most excitingly, these new observations show an active world with seasonal changes altering the dwarf planet's surface. It turns out that this far-flung world has more in common with Earth than we would have ever imagined."

191 comments

  1. I know I was shocked to learn that by Anonymous Coward · · Score: 0, Offtopic

    It's not a dog! Why would Disney lie to me?

  2. High res? by XPeter · · Score: 5, Insightful

    Is it just me, or do the photos look like a big blob of yellows and grays?

    --
    "The difference between genius and stupidity is that genius has it's limits" - Albert Einstein
    1. Re:High res? by sakdoctor · · Score: 1

      By jove you're right! These photos need to be "enhanced".

    2. Re:High res? by ceoyoyo · · Score: 4, Informative

      Considering it normally looks like this: http://news.nationalgeographic.com/news/2010/02/100204-pluto-hubble-best-pictures/, those blobs of yellow and grays are pretty impressive.

    3. Re:High res? by pushing-robot · · Score: 2, Funny

      Is it just me, or do the photos look like a big blob of yellows and grays?

      Based on my experience, all planets look like that from space. And on the surface they all look like southern California.

      --
      How can I believe you when you tell me what I don't want to hear?
    4. Re:High res? by MichaelSmith · · Score: 4, Funny

      Is it just me, or do the photos look like a big blob of yellows and grays?

      Based on my experience, all planets look like that from space. And on the surface they all look like southern California.

      Based on my experience of watching Doctor Who, Blakes 7, etc; all planets look like the quarry next to the BBC studios.

    5. Re:High res? by daveime · · Score: 1

      That quarry is time locked. It's a fixed point in time and space, it's a fact !

      Unless Rassillon has a backup plan involving finding a ring in a quarry ... no, wait ... they already did that one.

    6. Re:High res? by Aku+Head · · Score: 1

      Unless you use a Stargate. Then all planets look like a forest outside of Vancouver.

    7. Re:High res? by frieko · · Score: 3, Funny

      Except of course for planets which happen to have Stargates or Cylons, all of which look like Vancouver.

    8. Re:High res? by Tablizer · · Score: 2, Interesting

      I think there's a matter of interpretation as far as "sharpest picture yet". The image you reference is "over-exposed" to bring out Pluto's multiple moons. They meant it's the best pic of Pluto's *system*, not Pluto's disk. In other words, "best" depends on what you want to emphasize. The world ain't black and white (pun semi-intended).

    9. Re:High res? by Tablizer · · Score: 1, Redundant

      These photos need to be "enhanced".

      Here's an enhancement from shortly after Pluto was demoted from planethood:

      http://images3.wikia.nocookie.net/uncyclopedia/images/e/e5/Pluto_sad.png
       

    10. Re:High res? by ceoyoyo · · Score: 2, Informative

      True, but it was the closest thing I could find on short notice. The point is that Pluto isn't very many pixels across. Also, I think when they said "best" they were actually talking about the new images, even though they didn't show a picture.

      There are a few more pictures here, both from Hubble and ground telescopes: http://www.solarviews.com/eng/pluto.htm

      It's not quite as simple as "the image is over-exposed." Pluto is dim and small enough to be right at the edge of telescopes' resolving power. Intensity variations across its face are even harder to detect, so it usually looks like either a fuzzy white ball or a fuzzy grey ball.

      The images are quite impressive.

    11. Re:High res? by Tablizer · · Score: 1

      Adds variety away from the Los Angeles hills look.

    12. Re:High res? by Gilmoure · · Score: 1

      Why you hatin' on the Gorn rocks?

      --
      I drank what? -- Socrates
    13. Re:High res? by Tablizer · · Score: 1

      It is a common practice to over-expose the "main" planet when trying to photograph or detect small moons in the vicinity. It's a technique I've seen many times in astronomy books.

    14. Re:High res? by end15 · · Score: 1, Funny

      Instead of a big dark blur, I see a big bright blur.

      hum... wait a minute... that means Pluto is actually Tatooine!

      I knew it was real... I knew it!

      (runs off to become a Jedi)

      --
      All glory to the Hypnotoad!
    15. Re:High res? by genner · · Score: 1

      Considering it normally looks like this: http://news.nationalgeographic.com/news/2010/02/100204-pluto-hubble-best-pictures/, those blobs of yellow and grays are pretty impressive.

      But the normal picture looks shiny.
      Pluto is one of those chicks that looks better from a distance.

    16. Re:High res? by jbezorg · · Score: 1

      Is it just me, or do the photos look like a big blob of yellows and grays?

      Blurry photos.... I feel like I'm watching an episode of "In Search Of"

      --
      I've lost all my marbles except one & It's fun to test angular & centripetal acceleration in my skull
    17. Re:High res? by Sique · · Score: 1

      Pretty easy. Find a definition that makes Pluto a planet without making too much other bodies in the solar system planets too.

      For instance you could define "solar planet" as "celestial body other than the sun in the solar system with more than 2000 km in diameter which was discovered by mankind before 1990" :)

      --
      .sig: Sique *sigh*
    18. Re:High res? by Anonymous Coward · · Score: 0

      Who cares if there is OVER 9000 planets?

    19. Re:High res? by mcvos · · Score: 1

      It makes the 8 real planets less special.

    20. Re:High res? by zapakh · · Score: 1

      Is it just me, or do the photos look like a big blob of yellows and grays?

      I sort of see a face in the last one. Admittedly, it is the face of Rorschach, but it's still a start!

    21. Re:High res? by Anonymous Coward · · Score: 0

      Is it just me, or do the photos look like a big blob of yellows and grays?

      If you'd take the time to look carefully, you'd be able to see irrigation canals. There is now proof that we are not alone in the universe.

    22. Re:High res? by Amorymeltzer · · Score: 1

      Astronomy is a science and, not to anthropomorphize, but science doesn't like having vague, undefined terms or concept. It can deal with them (just look various TOEs or even psychology) but a lot of effort goes toward specifying meaning. It doesn't serve our understanding to classify an apple as an orange for sentiment's sake.

      --
      I live in constant fear of the Coming of the Red Spiders.
    23. Re:High res? by Anonymous Coward · · Score: 1, Insightful

      Considering it normally looks like this: http://news.nationalgeographic.com/news/2010/02/100204-pluto-hubble-best-pictures/, those blobs of yellow and grays are pretty impressive.

      Picture in the Nat Geo article is quite the same picture as the one in the Discovery article; I'm assuming you pasted the wrong link (why it has +5 informative then, I don't know.. even a casual glance would reveal both the first article and your link relate to and show the same pictures)

    24. Re:High res? by andreyvul · · Score: 1

      What about the complex planets?

      --
      proud caffeine whore
    25. Re:High res? by Anonymous Coward · · Score: 0

      Then what about Ceres, Eris, Sedna, Haumea, Makemake, Orcus, Ixion, Huya, Quaoar, Varuna and the dozens of other unnamed or undiscovered dwarf planets in our solar system?

      If you make Pluto a planet, then you have to make them all planets, including some of the larger moons of the solar system.

    26. Re:High res? by Anonymous Coward · · Score: 0

      woooooooosh!

  3. Pluto = Asteroid WIth Attitude and Ego! by loose+electron · · Score: 3, Funny

    the amateur astronomer understands that Pluto is noting more than an asteroid with a big ego

    The attitude gets even bigger when its closer to the sun than Neptune.....

    How would you like to be demoted?

    --
    www.effectiveelectrons.com "chips that work" Analog, RF, Mixed Signal
    1. Re:Pluto = Asteroid WIth Attitude and Ego! by goldaryn · · Score: 3, Informative

      the amateur astronomer understands that Pluto is noting more than an asteroid with a big ego

      "That's no planet... it's an asteroid with a big ego.."

    2. Re:Pluto = Asteroid WIth Attitude and Ego! by PiAndWhippedCream · · Score: 0

      That's not flying, that's falling with style!

    3. Re:Pluto = Asteroid WIth Attitude and Ego! by zach_the_lizard · · Score: 2, Funny

      But that's the trick to flying! All you have to do is fall at the ground and miss! The, er, knack is in the missing part, but nothing we can't handle.

      --
      SSC
    4. Re:Pluto = Asteroid WIth Attitude and Ego! by PiAndWhippedCream · · Score: 0

      Considerably easier if the ground is as small as it is on Pluto.

    5. Re:Pluto = Asteroid WIth Attitude and Ego! by Tablizer · · Score: 1

      the amateur astronomer understands that Pluto is nothing more than an asteroid with a big ego

      There's a Rush Limbaugh + Jupiter joke just waiting to be born....
         

    6. Re:Pluto = Asteroid WIth Attitude and Ego! by ILuvRamen · · Score: 1

      Also, it appears that once you impersonate a planet for decades and get caught, they blur your face in photos :-P Get it cuz the photo says "faces" of pluto and it's blurry? For every one of you who thought I didn't have to explain it, there's a person who needed it explained lol.

      --
      Google's Super Secret Search Algorithm: SELECT @search_results FROM internet WHERE @search_results = 'good'
    7. Re:Pluto = Asteroid WIth Attitude and Ego! by earlymon · · Score: 1
      --
      Pathological kinda promises Path + Logical - but instead, you get stuck with pathetic.
    8. Re:Pluto = Asteroid WIth Attitude and Ego! by BodhiCat · · Score: 1

      the pictures show that its round and has seasons, it should be a planet

    9. Re:Pluto = Asteroid WIth Attitude and Ego! by laurele · · Score: 1

      Pluto is not an asteroid, as it is large enough to be rounded by its own gravity, a characteristic of planets and not of shapeless asteroids, which are simply held together by chemical bonds.

  4. Space porn? by peipas · · Score: 0

    I'm sorry, but the photos look like an interracial gangbang to me.

    1. Re:Space porn? by Anonymous Coward · · Score: 0

      God, don't mod him troll, and take a look at the pictures(again).

    2. Re:Space porn? by Anonymous Coward · · Score: 0

      rule 34

    3. Re:Space porn? by Anonymous Coward · · Score: 0

      God, don't mod him troll, and take a look at the pictures(again).

      90-degrees: Doggie-style, female facing left.
      180-degrees: Female riding seated male reverse-cowgirl, fellating a standing male who is facing left.
      270 degrees: I'm not sure, but when I see it, brix will be shat.

      I hate you.

    4. Re:Space porn? by Amorymeltzer · · Score: 1

      (This goes without saying on /. but) If that's what you're noticing in those pictures then you REALLY need to get laid.

      --
      I live in constant fear of the Coming of the Red Spiders.
  5. Can't wait for a good picture! by mykos · · Score: 4, Informative

    Five more years until we have a GOOD picture of Pluto. July 14, 2015...can't wait!

    http://en.wikipedia.org/wiki/New_Horizons

    1. Re:Can't wait for a good picture! by Brad1138 · · Score: 2, Funny

      Damn, the worlds going to end before then.

      --
      If you could reason with religious people, there would be no religious people
    2. Re:Can't wait for a good picture! by Tablizer · · Score: 0, Offtopic

      Damn, the worlds going to end before then.

      Which one? Did you mean "worlds" or "world's"? In the space age one has to be more specific.
           

    3. Re:Can't wait for a good picture! by slashqwerty · · Score: 4, Informative
      The data rate from Pluto is expected to be 1000 bits per second. It would take over two years to transfer the entire 8GB buffer at that speed. Granted, New Horizons could send back a 1MB picture in about two hours. But the mission planners have other plans for the immediate flyby. They are going send radio signals from Earth to New Horizons to measure Doppler shift (inferring the gravitational pull and mass of Pluto) and to detect the effect Pluto's atmosphere has on the signal.

      Compressed pictures should be available to the public a few days after the flyby. They are expecting the full data set to take nine months.

      So for decent pictures you had best revise your estimate:

      Five more years until we have a GOOD picture of Pluto. July 14, 2015...can't wait!

      July 2015

    4. Re:Can't wait for a good picture! by mykos · · Score: 1

      Well, poo! I'm still excited, though.

    5. Re:Can't wait for a good picture! by sznupi · · Score: 1

      James Webb Space Telescope might beat it in giving us "good" pictures of Pluto; assuming it will be launched in 2014, as planned currently. And who knows what Herschel Space Observatory might give us soon, if pointed at Pluto...

      --
      One that hath name thou can not otter
    6. Re:Can't wait for a good picture! by Anonymous Coward · · Score: 0

      Wait so you corrected his sentence without actually correcting it? Ok.

    7. Re:Can't wait for a good picture! by Anonymous Coward · · Score: 0

      detect the effect Pluto's atmosphere has on the signal.

      Pluto has an atmosphere? I figured a body that small wouldn't have the necessary gravity to hold one.

    8. Re:Can't wait for a good picture! by Anonymous Coward · · Score: 0

      "Hubble's map is the best view of Pluto we'll have until the New Horizons probe is six months from close encounter. "

      We'll be getting better views of the planet well before New Horizon passes by. January 2015... can't wait!

    9. Re:Can't wait for a good picture! by QuoteMstr · · Score: 1

      It's very cold out at Pluto's distance, which slows down particles in the atmosphere and makes them easier to keep. That's why Titan has such a thick atmosphere, too, despite its small size.

    10. Re:Can't wait for a good picture! by Sinning · · Score: 1

      NASA's New Horizons spacecraft will flyby Pluto in mid 2015 as well.

  6. At the same time by ascari · · Score: 2, Insightful

    It's not just the seasons that change: In those four years Pluto has gone from being a planet to not being a planet to being a planet again to being kind of a planet... Complex and changing indeed.

    1. Re:At the same time by Hognoxious · · Score: 1

      According to TFS it's a world. That's something, at least.

      --
      Confucius say, "Find worm in apple - bad. Find half a worm - worse."
  7. Pluto having seasonal changes is well known by Trepidity · · Score: 1

    These new high-resolution views no doubt provide important new information about Pluto's seasons, but the fact that Pluto undergoes significant seasonal cycles has been known for quite a while. (Here's one randomly chosen mention.)

    1. Re:Pluto having seasonal changes is well known by Tumbleweed · · Score: 4, Funny

      the fact that Pluto undergoes significant seasonal cycles has been known for quite a while.

      Yeah, don't mess with Pluto. She's been in a bad mood for awhile now. Must be that time of the orbit.

  8. News Flash by MyLongNickName · · Score: 3, Insightful

    Pluto IS a planet. It was a planet when I was in school, so it will always be a planet, dadgummit.

    --
    See my journal for slashdot ID's by year. Mine created in 2005. http://slashdot.org/journal/289875/slashdot-ids-by-year
    1. Re:News Flash by Anonymous Coward · · Score: 0

      Pluto IS a planet. It was a planet when I was in school, so it will always be a planet, dadgummit.

      Where they screwed up. They should have established three classes of planets, Gas Giants, Rocky planets like Earth, and smaller ice planets. Instead of removing a planet they simply would have added one or two. What makes an ice planet? Large enough to have enough gravity to take on a round shape and orbits the Sun. The defining thing needs to be mass and orbiting the Sun. If the Earth orbited Jupiter it'd be a Moon. It's the only solution that makes sense. Saying an icy body can't be a planet means that there is a limit to how much water a planet can have and/or if it has water it has to orbit the goldielocks zone. That's a poor definition but currently it fits. Say there's an Earth sized planet orbiting near Pluto that is 90% water and the rest rock and metals. Is that a planet? They've already found a planet several Earth's in size that may be mostly water. No one has said it can't be a planet.

    2. Re:News Flash by RuBLed · · Score: 1

      Yes it is a planet, a dwarf planet. Things change.

    3. Re:News Flash by iceborer · · Score: 4, Funny

      You seem a little down; perhaps your humors are imbalanced. A good leeching should fix that right up!

    4. Re:News Flash by Tablizer · · Score: 1

      To settle this, let's borrow from the IT field and classify orbs as super-planets, mainframe-planets, mini-planets, micro-planets, and iPlanets. Done!

    5. Re:News Flash by R.Mo_Robert · · Score: 1

      Ceres was classified as a planet for 50 years, but we got over that--we can probably get over this, too.

      --
      R.Mo
    6. Re:News Flash by Anonymous Coward · · Score: 0

      Since when did the IAU have the authority, anyway?

      It's like a bunch of biologists saying "You know, now that we've discovered emus and kiwis, we don't really like it that ostriches are birds. From here on out, we're defining birds as creatures that have a keel on their sternum."

      An organization is perfectly allowed to define what internal definitions they want to use, but it's somewhat Orwellian for them to then inflict them upon others.

    7. Re:News Flash by machine321 · · Score: 1

      I'm sure he's already been leeching files all week.

    8. Re:News Flash by Jiro · · Score: 1

      A dwarf planet is not a type of planet.

    9. Re:News Flash by laurele · · Score: 1

      And this makes no sense. It is also inconsistent with the use of the term "dwarf" in astronomy, where dwarf stars are still stars, and dwarf galaxies are still galaxies.

  9. tux head? by Cyko_01 · · Score: 1

    am I the only one who sees a blurry tux face in the 180 photo?

    1. Re:tux head? by Anonymous Coward · · Score: 0

      You missed the naked woman?

    2. Re:tux head? by Anonymous Coward · · Score: 0

      4 years for that... i could have painted something way better with gimp and noone would have noticed the difference...

    3. Re:tux head? by keeboo · · Score: 1

      Uh... That's not a Rorschach test.

    4. Re:tux head? by Tablizer · · Score: 1

      You missed the naked woman?

      This is slashdot; we are used to that by now.
         

    5. Re:tux head? by sznupi · · Score: 1

      We have a proof!

      --
      One that hath name thou can not otter
  10. When can we have google pluto by spribyl · · Score: 1

    Nuf said

  11. Pluto is not a planet, just a large asteroid... by Anonymous Coward · · Score: 0

    Pluto is not a planet, just a large asteroid the size of other asteroids at that distance from the star by the name sun.

    1. Re:Pluto is not a planet, just a large asteroid... by FiloEleven · · Score: 1

      The whole scheme is arbitrary. The term "planet" was only nailed down in 2006, and of course it's going to take people time to adjust to the rigorous definition.

      I'm not sure how useful the classification is anyway. The differences between Mercury and Jupiter are greater than the differences between Mercury and Pluto. Earth is more different still than any of the three with its complex and varied forms of life.

      I think the astronomers should use their definition, and I suppose it ought to be taught in schools for the sake of consistency (though I question the value of making kids memorize the planets in the first place), but it's really not a big deal what you call it.

    2. Re:Pluto is not a planet, just a large asteroid... by Anonymous Coward · · Score: 0

      The term "planet" was only nailed down [wikipedia.org] in 2006, and of course it's going to take people time to adjust to the rigorous definition.

      If you read your own fucking link, you would know it is hardly "nailed down": Half the article is the "acceptance" issue and known controversies (of a scientific nature). Half the fucking article! And "rigorous"? Hardly, it is the exact opposite of that. They would have been better advised to pick a radius Pluto can't meet but Mercury does (e.g., 2000 km radius). This would satisfy the international group of America haters.

      ... but it's really not a big deal what you call it.

      It was sufficiently big of a deal that you defend it, that a fraction of the IAU gang-banged the issue.

      Classifications are supposed to have an arbitrary nature. This is why someone 17 years and 11 months is a minor however "sprouted" they might be and an 18 year old is not (even if barely pubescent). There are dwarf planets, planets, and the subset of planets known as gas giants. Other subsets might be those approaching brown dwarfs or not quite gas giants (maybe the "water worlds"). Do you think these will be classifid by "clearing some fucking orbit"? There existence after billions of years of galactic evolution is suffient evidence of having cleared something. No, the future will classify planets by SIZE - S * I * Z * E - not this hackjob the IAU came up with at the last second to avoid looking like stinking racists.

    3. Re:Pluto is not a planet, just a large asteroid... by SpryGuy · · Score: 1

      The key definition to me is that planets orbit in the plane of the ecliptic, all in the same direction.

      Pluto does not orbit in the plane of the ecliptic. It's orbit also crosses the paths of existing planets. It's clearly an Oort cloud object. And not even the largest one. It has more in common with a comet than with any of the other planets, in both orbit and composition.

      I don't understand why there's even a controversy here. Even as a child, when I looked at the diagram of the planets, Pluto stood out in a "One of these things is not like the others" way to me. It simply doesn't fit.

      The decision to demote Pluto from planethood was and is a good one, and everyone upset by it just needs to get over it.

      --

      - Spryguy
      There are three kinds of people in this world: those that can count and those that can't
    4. Re:Pluto is not a planet, just a large asteroid... by FiloEleven · · Score: 1

      Easy, killer.

      I decided against bothering with the controversy because the rest of my post is about how little it matters, and most people here respect the opinions of acronymed scientific groups. If it makes you feel better, you can skip that whole sentence.

      You lost me in that last paragraph, but I have a feeling you lost yourself long before that so I'm not too broken up about it.

    5. Re:Pluto is not a planet, just a large asteroid... by FiloEleven · · Score: 1

      You raise a good point--Pluto is an oddball. At the time of its discovery Pluto was thought to have a mass similar to Earth's; it was too far out to identify much about until the tech caught up to the science. I wonder if we'd be having this discussion today had optics made a leap forward before Pluto's discovery.

      The Pluto change makes sense for the purposes of astronomy, but you can't ignore the social impact that it has. Whenever new planets were discovered back in the day, people got excited about it--we still do, even when it's an "earth-like" planet that nothing could survive on and that none of us will ever see images of. It's a little unfair to allow for that excitement on the one hand but not the disappointment when a planet you grew familiar with is relegated to a lower status. It may be silly, but it removes some of its charm.

      Pluto is still a unique object unto itself no matter what category it's placed in, which is what I was trying to get at with my remark about Mercury and Jupiter, so it doesn't matter much to me how it's classified.

  12. i'll grant you pluto is a planet by circletimessquare · · Score: 5, Insightful

    if you grant me the other seven dwarves are planets: eris, makemake, haumea, sedna, orcus, 2001OR10, and quaoar

    http://upload.wikimedia.org/wikipedia/commons/9/91/EightTNOs.png

    and the other 100 or so such objects of pluto size likely to be found in the coming decades in the oort cloud

    or keep it easy and say its not a planet

    your choice, but the third graders of 2080 who have to memorize 80 planets might not be too happy with you

    face it, pluto is chump change

    --
    intellectual property law is philosophically incoherent. it is your moral duty to ignore it or sabotage it
    1. Re:i'll grant you pluto is a planet by argent · · Score: 1

      if you grant me the other seven dwarves are planets: eris, makemake, haumea, sedna, orcus, 2001OR10, quaoar, and the other 100 or so such objects of pluto size likely to be found in the coming decades in the oort cloud

      Sure, why wouldn't I be willing to call them planets? Toss in Ceres and Pallas as well.

    2. Re:i'll grant you pluto is a planet by Anonymous Coward · · Score: 1, Insightful

      How many continents are there?

      There's no reason why we can't just say "there are nine planets in the solar system, it's a historical definition, get used to it".

    3. Re:i'll grant you pluto is a planet by Daniel+Dvorkin · · Score: 0

      if you grant me the other seven dwarves are planets: eris, makemake, haumea, sedna, orcus, 2001OR10, and quaoar ... your choice, but the third graders of 2080 who have to memorize 80 planets might not be too happy with you

      All of those but Eris are considerably smaller than Pluto. I wouldn't have any problem with Eris being classified as a planet. And it will be a hell of a long time before we find 70 more Pluto-plus-sized objects in the Solar System. Make 1000 km radius (a nice round number) plus hydrostatic equilbrium the cutoff.

      The "cleared its neighborhood" definition is absurd, since by that definition Earth is not a planet.

      --
      The correlation between ignorance of statistics and using "correlation is not causation" as an argument is close to 1.
    4. Re:i'll grant you pluto is a planet by keeboo · · Score: 1

      if you grant me the other seven dwarves are planets: eris, makemake, haumea, sedna, orcus, 2001OR10, and quaoar

      http://upload.wikimedia.org/wikipedia/commons/9/91/EightTNOs.png

      Interesting picture.
      Pluto is already so small, I suspect that its smaller satellites (Nix and Hydra) are about the size of a golf ball, if that large.

    5. Re:i'll grant you pluto is a planet by Tablizer · · Score: 1

      if you grant me the other seven dwarves are planets: eris, makemake, haumea, sedna, orcus, 2001OR10, and quaoar

      Noooooo, if your classification system is too open, imagine all the weird names kids would have to memorize in school for Solar System Week. The only funny one used to be "Uranus".

      Well, on the bright side, one's chance of getting stuck with Uranus goes down from 1/9th to 1/16th.
             

    6. Re:i'll grant you pluto is a planet by NotQuiteReal · · Score: 2, Insightful

      the third graders of 2080 who have to memorize 80 planets might not be too happy with you

      If it is important you'll know... if not? Meh.

      How many of the 117 elements can you name?

      How many C-List Hollywood celebrities can you name? How much SF trivia do you know?

      --
      This issue is a bit more complicated than you think.
    7. Re:i'll grant you pluto is a planet by mbone · · Score: 5, Insightful

      The solar system does not exist to make things easier for third graders. If there are 80 planets, then so be it.

    8. Re:i'll grant you pluto is a planet by lawpoop · · Score: 3, Interesting

      Well, Pluto does seem to have the biggest satellite. If we wanted to maintain tradition and keep Pluto a planet, this might just be the fudge factor we need.

      --
      Computers are useless. They can only give you answers.
      -- Pablo Picasso
    9. Re:i'll grant you pluto is a planet by Beowabbit · · Score: 4, Informative

      your choice, but the third graders of 2080 who have to memorize 80 planets might not be too happy with you

      Once upon a time, students had to memorize only four elements (earth, air, fire, and water). Nowadays we recognize over a hundred, and there are a bunch of theoretical ones we can predict but have a hard time detecting. I don’t think “but people will have a hard time remembering them all, so we have to add arbitrary limit so that we don’t have so many” is a very good way of defining terms.

      I can see a good argument for saying that the solar system contains four planets and some rubble. I can see an argument for saying that it contains over a dozen planets, probably way over. I can see a good argument for saying that it consists tens of thousands of planets. I can see a good argument for saying that “planet” is not a piece of scientific terminology and letting lay usage define it.

      I can see an argument, although not a great one, for coming up with a definition that keeps the number down to a dozen, but I think the definition the IAU came up with is pretty ambiguous, since “cleared the neighbourhood around its orbit” is clearly relative, and you could define “cleared”, “neighbourhood”, and “around” in such a way that Ceres has done it (admittedly a stretch), or that Jupiter hasn’t. (There’s also the matter of “has” — do things that weren’t planets early in the history of the solar system become planets as time passes and they collect impacts?) And the IAU definition explicitly excludes anything that orbits around any star other than our sun, which to my mind makes it just silly, and means that a sizable fraction of the astronomical community is concerned with studying planets (and publishing papers calling them planets) that do not meet the IAU definition.

      Incidentally, once upon a time, any new thing discovered in orbit in the solar system other than the sun was considered a planet, so the moon, the moons of Jupiter, and the asteroids (the few then known) would all have been considered planets. If you exclude dust particles and the like, that’s still a reasonable definition for the sorts of things that “planetary scientists” study, and personally I kind of like that approach.

    10. Re:i'll grant you pluto is a planet by Anonymous Coward · · Score: 0

      What, no Ceres?

    11. Re:i'll grant you pluto is a planet by Lije+Baley · · Score: 1

      You know, you'd have that damn movie finished by now if you didn't spend so much time on /.

      --
      Strange things are afoot at the Circle-K.
    12. Re:i'll grant you pluto is a planet by sznupi · · Score: 3, Insightful

      They are nowhere near "considerably" smaller than Pluto. Than Earth, maybe.

      The "cleared its neighborhood" definition is absurd, since by that definition Earth is not a planet.

      And that is simply not true (have you even read the definition?). Earth very much cleared it's neighbourhood; bodies in its vicinity are completelly dominated by its gravitation.

      --
      One that hath name thou can not otter
    13. Re:i'll grant you pluto is a planet by sznupi · · Score: 1

      So Mercury, Venus and perhaps Mars are not planets?

      --
      One that hath name thou can not otter
    14. Re:i'll grant you pluto is a planet by sznupi · · Score: 1

      Too broad a definition and it looses any meaning.

      Besides, don't forget so conveniently that, apart from "planet" and "dwarf planet" distinction, there's also "terrestrial planet", "gas giant planet", "ice giant planet"...

      --
      One that hath name thou can not otter
    15. Re:i'll grant you pluto is a planet by sznupi · · Score: 2, Interesting

      But our language and terminology exists to facilitate exchange of ideas. Any term which encompasses so many so different bodies looses most of any usable meaning.

      --
      One that hath name thou can not otter
    16. Re:i'll grant you pluto is a planet by lawpoop · · Score: 1

      Well, I'm not trying to make a rubric for determining what is or isn't a planet; I'm trying to figure out some set of rules whereby we could keep the canonical nine planets.

      According to this graph, doing non-satellites by mass puts only Eris ahead of Pluto. Maybe we could just throw Eris in, and cut it off at Pluto.

      --
      Computers are useless. They can only give you answers.
      -- Pablo Picasso
    17. Re:i'll grant you pluto is a planet by treeves · · Score: 1

      I like that picture but I'd like it better if it included Earth's moon for comparison.

      --
      ...the future crusty old bastards are already drinking the Kool-Aid.
    18. Re:i'll grant you pluto is a planet by hvm2hvm · · Score: 1

      At least in my country the educational system doesn't always follow this "need to know" methodology (read that: they just dumped 20 year old shit on us and made us memorize it in the exact way the teachers learned it and when we were done some of the information was outdated, wrong or just pointless). I'm pretty sure it's not much better in other places.

      --
      ics
    19. Re:i'll grant you pluto is a planet by RivenAleem · · Score: 1

        “cleared the neighbourhood around its orbit”

      I've heard of people able to perform this feat after a large meal.

    20. Re:i'll grant you pluto is a planet by syousef · · Score: 1

      Yet you're perfectly willing to accept that the definition of a "dwarf planet" is not a subclass of the defintion of a planet???

      I have no issue with Pluto being reclassified as an object other than a planet, but the IAU's resolution was abysmal and inconsistent. By annoying those who wished to hold onto the view that Pluto is a planet, defining a planet as a body that orbits our sun (so technically an extrasolar planet isn't a planet) and making a mess of th new term they introduced (dwarf planet not a type of planet) they couldn't have done worse!!!

      --
      These posts express my own personal views, not those of my employer
    21. Re:i'll grant you pluto is a planet by khallow · · Score: 2, Insightful

      or keep it easy and say its not a planet

      What's the scientific justification? I could care less about the troubles of third graders of 2080. May their tongues freeze on the 2080 analogue of the ice-cold flag pole.

      Here's my complaint with the 2006 IAU definition.

      1) "Planet" is poorly defined. "Clears the neighborhood" needs to be defined and should have been back in 2006.
      2) It abuses the English language. For some odd reason, "dwarf planets" are not considered "planets". That is not how adjectives in the English language are supposed to be used and will just increase the confusion among laypeople.
      3) The definition fails to extend to any other star system with planets (excuse me, exoplanets). Any attempt to use a "clears the neighborhood" definition would lead to stupidity since you'd have to determine most of the dynamical characteristics of a star system in order to avoid the unpleasant label "probable planet". And what happens when (not if, when) you have a Jupiter-mass exoplanet that is in a resonance orbit with a much larger planet or brown dwarf? A "dwarf planet" (since that's what's left for labels in the Solar System).
      4) People who claim that this process exemplifies in any way a genuine scientific process should be embarrassed. Any of the prior three points rules that out.

    22. Re:i'll grant you pluto is a planet by bmcage · · Score: 1

      Well, I'm not trying to make a rubric for determining what is or isn't a planet; I'm trying to figure out some set of rules whereby we could keep the canonical nine planets. According to this graph, doing non-satellites by mass puts only Eris ahead of Pluto. Maybe we could just throw Eris in, and cut it off at Pluto.

      Ceres was a canonical planet for 50 years, nobody minds it being a dwarf planet now, after having been called an asteroid. The masses are uncertain of all objects that have had no fly by. It is expected that other dwarf planets larger than pluto are out there anyway.

    23. Re:i'll grant you pluto is a planet by machine321 · · Score: 1

      Memorize 80 planets? They probably said the same thing in 1959 about states.

    24. Re:i'll grant you pluto is a planet by Anonymous Coward · · Score: 0

      Once upon a time, students had to memorize only four elements (earth, air, fire, and water). Nowadays we recognize over a hundred, and there are a bunch of theoretical ones we can predict but have a hard time detecting. I don’t think “but people will have a hard time remembering them all, so we have to add arbitrary limit so that we don’t have so many” is a very good way of defining terms.

      They also had to memorize hundred of gods, godesses, minor deities, heroes villains etc. and their relationships to each other and humans to explain all the things that the four elements could not. Of course, now many of the planets and elements and other scientific objects and interactions are named these. Nothing changes that much, really.

    25. Re:i'll grant you pluto is a planet by Anonymous Coward · · Score: 0

      And then Mercury stops being a planet?

    26. Re:i'll grant you pluto is a planet by lawpoop · · Score: 1

      I'm curious -- how do we determine the mass on an object that has had a fly-by? By how much it affects the orbit of the fly-byer?

      --
      Computers are useless. They can only give you answers.
      -- Pablo Picasso
    27. Re:i'll grant you pluto is a planet by Anonymous Coward · · Score: 0

      quaoar

      I knew it! They're real! Do you hear me, Listy, aliens exist and they are going to give me a new body!

    28. Re:i'll grant you pluto is a planet by Jiro · · Score: 1

      The reason for defining it as a body which orbits our sun is that the definition is basically a rule which states the reason why some astronomers don't want Pluto to be a planet, the "clearing the neighborhood" definition. It's impossible to tell whether something in another solar system has cleared the neighborhood of smaller objects (unless you travel there), so they had to exclude other solar systems to get the preferred definition in.

    29. Re:i'll grant you pluto is a planet by Jiro · · Score: 1

      The "clearing the neighborhood" definition doesn't count anything in a resonance, so that would be fine. However, you'd still have to worry about normal planets since you just can't see objects smaller than a certain size, so you can't tell if the neighborhood has been cleared.

      What would really make the definition look silly is if anyone finds a Kuiper Belt object in our solar system bigger than Mercury. It's certainly possible, and they'll then have to say that Mercury is a planet and the larger Kuiper Belt object is only a "dwarf planet".

    30. Re:i'll grant you pluto is a planet by Anonymous Coward · · Score: 0

      Don't forget about Ceres, either. If Pluto's a planet, it's the 10th planet, not the 9th.

    31. Re:i'll grant you pluto is a planet by Zancarius · · Score: 1

      But our language and terminology exists to facilitate exchange of ideas. Any term which encompasses so many so different bodies looses [sic] most of any usable meaning.

      Pointing to the sky and saying that "most of those points of light are stars" seems to convey plenty of meaning to me. What's your point? By this sense of reasoning, "stars" and--by definition--"galaxies" are two terms that have no usable meaning.

      And for that matter, so would other terms that exist to define specific populations: Americans, Canadians, Chinese, insects, cats, dogs, and so forth.

      --
      He who has no .plan has small finger. ~ Confucius on UNIX
    32. Re:i'll grant you pluto is a planet by syousef · · Score: 1

      Yes, when you tie yourself into a knot so that the definition no longer makes sense, it's a clear sign you have it wrong.

      The definition also raises the question of when the planets got to the status of planethood since in the early solar system they may not have cleared out their own orbits. So one day they were not planets and then a few million years later they were. JUst how cleared out those orbits have to be is also unclear. If suddenly a comet passes through a planet's orbit is it still cleared out? Common sense would say yes. The bad definition they came up with would say it's arbitrary as to how temporary the event is. It's just bad science all round.

      --
      These posts express my own personal views, not those of my employer
    33. Re:i'll grant you pluto is a planet by Anonymous Coward · · Score: 0

      My third graders knows about the planets and the "dwarf planets" like Pluto. She doesn't know all the dwarf planets by name, but she knows a few. And she knows why they are different. It's been great and the complexity of the new definitions has caused her to learn more, not less, and that's just how it should be.

      They way they are teaching her places more emphasis on types of bodies. They learn about "terrestrials", "gas giants", and "dwarves" as well as comets, etc, as different catagories of solar system bodies.

      Trust me, the third graders can handle this stuff just fine.

    34. Re:i'll grant you pluto is a planet by bmcage · · Score: 1
      Actually, we know the mass from the orbit, what is uncertain is the density, as the size has not been determined accurately (a pixel from the distance we see pluto, and certainly the other dwarf planets far away, are a lot of kilometers). After the flyby you know the real size, so you know the density. In other words, the flyby is needed to measure the size.

      A flyby is also important to know the real albedo of pluto, as that is uncertain. Size estimates of all far away dwarf planets is based on their mass and albedo, so have a large amount of error (if part of surface is black, we will estimate it much smaller than it really is). In other words, all size estimates of the dwarf planets (except Ceres) have a large error.

    35. Re:i'll grant you pluto is a planet by laurele · · Score: 1

      Memorization is not important. Do we ask kids to memorize all 63 of Jupiter's moons? If the solar system has 80 planets, then that is what it has. It's more important for kids to know the characteristics of the different types of planets than to memorize a list.

    36. Re:i'll grant you pluto is a planet by laurele · · Score: 1

      If Earth were in Pluto's orbit, it would not clear that orbit of other KBOs. And the requirement that an object "clear its orbit" to be a planet is arbitrary and does not have consensus among astronomers.

  13. GAH! by Anonymous Coward · · Score: 0

    "From Earth, the disk of Pluto is ten times smaller than the typical resolution limit of a ground-based telescope."

    "Ten times smaller?"

    1. Re:GAH! by Tablizer · · Score: 1

      That sounds about right. Earth scopes can barely make out features on even Neptune's atmosphere (although adaptive optics seem to be making rapid progress).

  14. Classification by Brad1138 · · Score: 3, Funny

    It turns out that this far-flung world has more in common with Earth than we would have ever imagined.

    Should we maybe think of classifying Pluto as a real planet?

    --
    If you could reason with religious people, there would be no religious people
    1. Re:Classification by Tablizer · · Score: 1

      [Earth-like features] Should we maybe think of classifying Pluto as a real planet?

      There are moons with complex surfaces also, such as Titan, Europa, Io, Enceladus, etc. Having complex or dynamic surfaces is not unique to planets.
         

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

      i dunno. has it met that blue fairy and gone on a quest with an insect yet?

    3. Re:Classification by Anonymous Coward · · Score: 0

      No, it's not a Class M planet.

      Maybe a Class P.

    4. Re:Classification by Anonymous Coward · · Score: 0

      No that means earth is not a planet.

    5. Re:Classification by laurele · · Score: 1

      It is a real planet. The fact is, there are more subclasses of planets than just terrestrials and jovians. Dwarf planets are planets too, regardless of the nonsensical decree of the IAU.

  15. There are four planets. by argent · · Score: 3, Insightful

    The solar system only has four planets worth distinguishing, Jupiter, Saturn, Uranus, and Neptune. The rest of the objects in the solar system are too small to retain significant hydrogen and can be dismissed.

    1. Re:There are four planets. by Daniel+Dvorkin · · Score: 2, Insightful

      Yep. You could also say that the Solar System consists of one star, one failed star, and a bunch of other junk.

      --
      The correlation between ignorance of statistics and using "correlation is not causation" as an argument is close to 1.
    2. Re:There are four planets. by FCAdcock · · Score: 1

      You're right... Because Earth is WAY to small to hold any of that hydrogen stuff...

      --
      --Forest C. Adcock--
    3. Re:There are four planets. by argent · · Score: 4, Informative

      You're right... Because Earth is WAY to small to hold any of that hydrogen stuff...

      Jupiter: 89% Hydrogen
      Saturn: 96% Hydrogen
      Uranus: 83% Hydrogen
      Neptune: 80% Hydrogen
      Earth: 0.0021% Hydrogen

      Yeh, pretty much.

    4. Re:There are four planets. by Anonymous Coward · · Score: 1, Funny

      Yep. You could also say that the Solar System consists of one star, one failed star, and a bunch of other junk.

      So, the solar system is an office?

    5. Re:There are four planets. by Anonymous Coward · · Score: 0

      Earth isn't worth distinguishing?

    6. Re:There are four planets. by dominious · · Score: 2, Informative

      this is funny because the word "planet" comes from the Greek word "planitis" which means "wanderer". From wikipedia:

      In ancient times, astronomers noted how certain lights moved across the sky in relation to the other stars. Ancient Greeks called these planetes asteres: wandering stars or simply planetoi: wanderers, from which today's word "planet" was derived.

      Now you want to change the definition of what a "planet" is while the actual meaning of the word hasn't changed. Imagine "planets" were called "wanderer stars" and then I told you that the definition of a "wanderer star" has nothing to do with movement but with size and whether the object produces hydrogen. So stop calling it "wanderer star" then!

    7. Re:There are four planets. by Ihlosi · · Score: 1

      Earth isn't worth distinguishing?

      Nah. Boring. And mostly harmless.

    8. Re:There are four planets. by argent · · Score: 1

      Now you want to change the definition of what a "planet" is while the actual meaning of the word hasn't changed.

      Not me, it was the IAU. Well, some of the IAU.

      Imagine "planets" were called "wanderer stars" and then I told you that the definition of a "wanderer star" has nothing to do with movement but with size and whether the object produces hydrogen.

      Oh, oh, oh, let's add that to the table!

      Jupiter: 89% Hydrogen
      Saturn: 96% Hydrogen
      Uranus: 83% Hydrogen
      Neptune: 80% Hydrogen
      Sun: 75% Hydrogen
      Typical star: 70-80% Hydrogen
      Earth: 0.0021% Hydrogen

      OK, I'll go along with that.

    9. Re:There are four planets. by Tim+C · · Score: 1

      For being where we live and containing a huge amount of life, yes.

      As a planet, depends on the criteria used.

    10. Re:There are four planets. by Trepidity · · Score: 1

      Hydrogen's actually about 0.9% of the earth's total mass, though you're right that it's only 0.0021% of the atmosphere (most of earth's hydrogen is locked up in water or ice).

    11. Re:There are four planets. by argent · · Score: 2, Informative

      I checked a number of sources and it put it at 0.14% of the crust, and about 0% of the mantle and core. The crust is about 0.015% of the volume of the Earth (and less than that by mass). Multiply it out, you get 0.0021%. My bad for forgetting the oceans. Still, it's really a negligible percentage either way.

  16. The real question is... by argent · · Score: 3, Insightful

    If Pluto's a dog, then what's the deal with Goofy?

    1. Re:The real question is... by Anonymous Coward · · Score: 1, Insightful

      If Pluto's a dog, then what's the deal with Goofy?

      The answer is simple Pluto is a dog, and Goofy is a dog erectus.

    2. Re:The real question is... by argent · · Score: 1

      Hmmm. He's certainly not Habilis (handy).

    3. Re:The real question is... by larry+bagina · · Score: 1

      he's a goat, see?

      --
      Do you even lift?

      These aren't the 'roids you're looking for.

    4. Re:The real question is... by Anonymous Coward · · Score: 0

      Goofy may be an evolved line of Canis (Canis sapiens? Canis erectus?), while Pluto is from an older, less developed line (present day Canis lupus familiaris). People keep monkeys for pets. From the perspective of a dissimilar species, maybe like a whale, both humans and pet monkeys might be viewed with similar confusion.

    5. Re:The real question is... by CaroKann · · Score: 1

      If Pluto's a dog, then what's the deal with Goofy?

      Goofy's the "Dog Star".

    6. Re:The real question is... by Sulphur · · Score: 1

      If Pluto's a dog, then what's the deal with Goofy?

      Goofy has global warming.

    7. Re:The real question is... by thunderclap · · Score: 1

      If Pluto's a dog, then what's the deal with Goofy?

      The answer is simple Pluto is a dog, and Goofy is a dog erectus.

      Actually the correct term would be Canis Erectus. Or if you perfer Goofus Canis Erectus. And considering the surface Temperture the pelts are amazing. :D

  17. Another Earth(like)? by DynaSoar · · Score: 4, Insightful

    "...more in common with Earth than we would have ever imagined."

    If this is going to be along the lines of the the "Earthlike" exoplanets, it means something like Pluto has a surface, and probably some elements.

    Why is it every planet that's not obviously entirely unlike Earth is "Earthlike"? Are we really that desperate for a refuge should we ruin this planet completely?

    Hell no. Most people with even a slight interest and modest education know better, and don't try to make a point anything like that. No, these asinine statements are almost invariably made by 'science journalists' which are rapidly becoming less and less of both of those. They know they can't keep your interest recounting the bare facts so they have to come up with some bullshit that they're probably not even aware how bag of hammers stoopid it sounds. Pluto has an axial tilt, therefore it has seasons... like Earth. Sure, seasons with an average summer of 60 degrees Kelvin and winters at 30 Kelvin. How very Earthlike.

    See, there's a downside to all these magazines and other media making stuff available on the net. Since they're making it available for free, they're not making anything directly from them, so they have nothing to lose by making them crap. Then they can get you to subscribe for the better stuff. In theory. Rather than paying some real and knowledgeable science journalists, or even specialists in that field, to write better material, they go the cheap route and use the same mediocre hacks for their print versions as for their e-versions.

    So, naturally Pluto is Earthlike. It's because the source is Sciencelike. Sure, and those writers' and editors' asses are Hatlike.

    --
    "I may be synthetic, but I'm not stupid." -- Bishop 341-B
    1. Re:Another Earth(like)? by Anonymous Coward · · Score: 0

      Is it asshattery or douchebaggery? That's an important distinction.

    2. Re:Another Earth(like)? by Anonymous Coward · · Score: 0

      I believe it would be shenanigans .

    3. Re:Another Earth(like)? by scdeimos · · Score: 1

      I don't know any of this surprises you. Media outlets are very Businesslike. Like businesses, they are driven to be Profitlike. You make profit by maximising your income (none, or maybe banner clicks) while minimising your expenses (lights, power, reporters' salaries).

      Thus, we have "no truth in advertising - nor in news media."

    4. Re:Another Earth(like)? by WillDraven · · Score: 1, Interesting

      Minor nitpick, Pluto's seasons are primarily driven by its highly elliptical orbit.

      --
      This is my sig. There are many like it but this one is mine.
    5. Re:Another Earth(like)? by Tim+C · · Score: 1

      an average summer of 60 degrees Kelvin

      Nitpick, but you don't say "degrees Kelvin". I suspect that this was a typo though, as you use it correctly further on.

    6. Re:Another Earth(like)? by DynaSoar · · Score: 1

      I don't know any of this surprises you. Media outlets are very Businesslike. Like businesses, they are driven to be Profitlike. You make profit by maximising your income (none, or maybe banner clicks) while minimising your expenses (lights, power, reporters' salaries).

      Thus, we have "no truth in advertising - nor in news media."

      Surpised, no. If I were I wouldn't have provided my take on the origin and nature of the problem. Not surprised at all, because I've seen far too much of it for too long. Just to pissed to keep letting it go by.

      I don't just throw a tantrum here over them. I write the author, editor or other suitable recipient at the source. And I don't intend to just leave it at that. I'm also reading up on science journalism so I can compete in that marketplace for positions where the journalism could actually be appreciated and make a difference.

      --
      "I may be synthetic, but I'm not stupid." -- Bishop 341-B
    7. Re:Another Earth(like)? by DynaSoar · · Score: 1

      Minor nitpick, Pluto's seasons are primarily driven by its highly elliptical orbit.

      TFA credits both eccentricity and obliquity equally. I don't claim to know enough to say which is more accurate, but I do claim to be able to correctly use these alternate terms which the writer of TFA would probably scratch their head and dictionary pages over. Now that's not to blow my own horn over it, since many others know those terms also, but the following is intended as such a toot: I can name a musical piece that uses those and others correctly and explicitly enough to serve as an educational device as well as a damn fine listen. Check it out....

        === spoiler alert, answer below, reversed ===

          eltit gnos dna mubla htob 93.0 odeblA ,silegnaV

      --
      "I may be synthetic, but I'm not stupid." -- Bishop 341-B
    8. Re:Another Earth(like)? by Geminii · · Score: 1

      so they have nothing to lose by making them crap.

      Reputation. Eyeballs. Advertising. Money. Existence.

  18. Because... by astroengine · · Score: 1

    ...planets have surfaces. Pluto has a surface, therefore it's a planet.

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

      And Jupiter (and most likely Saturn, Uranus, and Neptune) don't, so they're not planets.

    2. Re:Because... by imakemusic · · Score: 2, Insightful

      Awesome! That means my desk is a planet as well!

      --
      Brain surgery - it's not rocket science!
  19. Sooo... by Anonymous Coward · · Score: 0

    Any Mi-Go spotted yet?

  20. What about Makemake ? Eris ? Haumea ? by mbone · · Score: 1

    Pluto is not the only large body out there - Makemake, Haumea and Eris, among others, are just as large or larger, and also have signs of changes on their surface, but don't have the "planetary" history and don't get nearly the attention.

    1. Re:What about Makemake ? Eris ? Haumea ? by Cochonou · · Score: 1

      History aside, Pluto is the closest, so it makes sense to study it more in detail - excluding Ceres and Vesta, which are in the asteroid belts. Actually, every three of these planets/dwarf planets/asteroids/etc are going to get attention soon, as Pluto is going to be visited by New Horizons, and Ceres & Vesta by Dawn.

  21. So did they find... by sconeu · · Score: 1
    --
    General Relativity: Space-time tells matter where to go; Matter tells space-time what shape to be.
    1. Re:So did they find... by machine321 · · Score: 1
    2. Re:So did they find... by MozeeToby · · Score: 1

      No no, that's on Rupert (er... wait, I'm mixing future histories aren't I?)

  22. i just had an epiphany by circletimessquare · · Score: 0, Offtopic

    this ridiculous argument is a good definition of conservatism versus liberalism, in the abstract

    the idea that pluto is a planet or not has absolutely no relevance to anyone's life. it is also a pretty arbitrary and pointless issue: no one has any vested interests here. however, it is memorized as a child, and has a long tradition

    therefore, i bet you if you asked a random sample of self-identified conservatives, in any country, they would choose pluto remain a planet. and i would also bet a random sample of self-identified liberals worldwide would choose that pluto not be a planet

    because the only issue here is tradition. obsequious unthinking obedience to the past and a dimwitted anxiety at anything new, ie, conservatism, versus forward thinking logic and rationality, aka liberalism

    --
    intellectual property law is philosophically incoherent. it is your moral duty to ignore it or sabotage it
    1. Re:i just had an epiphany by Anonymous Coward · · Score: 0, Offtopic

      That is about the most twisted view of liberal -vs- conservative I have ever heard...

      Literally, it is "Liberal", as in "A liberal application of peanutbutter on the bread", and "Conservative", as in "Try to be a bit more conservative of our oxygen supply."

      Specifically, as it relates to social welfare. Example: The liberal view is to supply however much money is needed to ensure that no child goes hungry, no matter what the price. The conservative view is to supply enough money that the preponderance of the children do not go hungry, while retaining a tight reign on government spending.

      At least in theory.

      Recent crops of "Liberals" and "Conservatives" blur these ideological standpoints to the point of being unrecognizable.

      Where the "Science VS Religion" meets "Liberal VS Conservative" ball comes into play, is that the liberal takes the view that no amount of tradition or public sentimentality (eg, magical thinking, traditionalism, religious dogma, et al that you seem to rail against in your post above) justifies the slowing of intellectual pursuits and progress; While the conservative takes the view that while the science is incontrovertable, the "The peasants are revolting, and they have torches and pitchforks!" potential of the liberal approach makes it insanely foolish to implement.

      This is why the conservative government of the bush administration (Despite its blurred line on deficit war expendature, which was indisputably liberal in the purest sense.) acted the way it did on such "Controversial" issues as the infamous "Stem Cell Research", and "Gay marriage" issues. (Like it or not, a VERY large percentage of the population in the US is against these. You can argue that they are stupid/insane/deluded/brainwashed/whatever until you are blue in the face, it does not change the fact that this is indeed the case.)

      In case you were wondering, I am a moderate libertarian. I simply grow very tired of the whole "Liberals are teh UBER! Conservatives are teh SUXX0rZ!" on one side, and the "Lieberals are commies, Conservatives are the Real Americans!(TM)" on the other.

      Like any two extremes in a statistical plot, the percentage of the time when a fully liberal or a fully conservative implementation for any given problem actually being necessary/ideal is, by definition, marginal.

      For this reason, I see both views as having merits, but blind adherence to either is simply wrong the majority of the time.

      Your association of conservatives with being backwards hillbillies, and liberals as being enlightened rationalists is horribly misguided, and frightening from my perspective.

      The true rationalist would concede that there are times to be conservative, and times to be liberal, and give reasons for each individual circumstance as it arrises; often creating natural compromises in the process, which places his solutions someplace near the median of the Liberal-Conservative scale.

      This is because the true rationalist understands that while something might be true, if that truth would have seriously erosive implications to the current social order, it promises to bring more harm than benefit to blindly enforce it. Better is to slowly allow the social population and mindset to adapt to this newly discovered truth over time, thus reducing total damage and waste of resources.

      A good example of this, is Evolution VS Creationism. Evoltionary theory is the best explanation for what we have observed scientifically, and has been proven in a number of test cases. However, it challenges the world-view of a VERY VERY VERY large percentage of the population, and forcing it as an issue would create much social and urban unrest, much like the current situation in Ireland with the Protestants VS the Catholics. This makes it a VERY stupid idea to try and force down the public's collective throats at this moment in time. Instead, as you can see by its slow introduction into the school system, the truth of evolution is being slowly incorporated into the social conciou

  23. Eh...hem... by djupedal · · Score: 1

    If you watch that little slide show, you see.....Asia, Europe, Africa, and then the Americas - they could have tried a bit harder if all they were doing was shuffling out a fake....geeesh.

  24. heeey, wait a second... by jbuck · · Score: 1


    heeey, wait a second... that looks just like a planet I went to grade school with!

    .

    --
    -whoa, I'm jones'ing for a sig right about now...
  25. what about the big ass artifact by Anonymous Coward · · Score: 0

    they get a good look at the charon mass relay?

  26. Mm hmm.. by Greyfox · · Score: 1

    Now is this better... or worse?

    --

    I'm trying to teach myself to set people on fire with my mind... Is it hot in here?

  27. Comment removed by account_deleted · · Score: 1

    Comment removed based on user account deletion

  28. Sad by Anonymous Coward · · Score: 0

    It's too bad that Hubble can photograph objects that are over 13 billion light years away and that we still can't get a sharp picture of Pluto, just 5 billion km away. I think by now we should have a much better view of Pluto than this. I'm looking forward to sharp, detailed photos which will look like we took as if we where right there. This is what we'll see in 2015? Isn't this sad?

  29. Sad by Anonymous Coward · · Score: 0

    It's too bad that Hubble can photograph objects that are over 13 billion light years away but still can't get a focused shot of a planet in our solar system. I don't need to see the same thing in 2015. This is sad.

  30. trolled by circletimessquare · · Score: 1

    chill out hyper boy

    unfortunately i only caught one hysteric with my stilted wording, but its a good one

    i consider myself a moderate. of course liberals and conservatives have equal claim to adequacy, and idiocies abound in either direction. duh. you don't need to defend the obvious truth to every moron and troll you see on teh intarwebs, relax

    --
    intellectual property law is philosophically incoherent. it is your moral duty to ignore it or sabotage it
  31. Syllogistically by Anonymous Coward · · Score: 0

    Pluto is not a planet.
    Pluto is Earth-like.

    => Earth is not a planet?

  32. Is that the first surface detail on pluto by physburn · · Score: 1
    Ok, the picture is an browny yellow circle with some darker patches on it, not the impressive although at least the circle is round to a good precession. But pluto is a very long way away, and i think these could be the first pictures showing any surface details on pluto. In less than a year, the New Horizon probe should pass pluto, and then i'm expecting some proper photographs showing the minor-planet to a good resolution, for the first time.

    ---

    Solar System Feed @ Feed distiller

  33. once upon a time by circletimessquare · · Score: 5, Informative

    ceres was considered a planet FOR HALF A CENTURY

    http://en.wikipedia.org/wiki/Ceres_(dwarf_planet)

    The classification of Ceres has changed more than once and has been the subject of some disagreement. Johann Elert Bode believed Ceres to be the "missing planet" he had proposed to exist between Mars and Jupiter, at a distance of 419 million km (2.8 AU) from the Sun.[17] Ceres was assigned a planetary symbol, and remained listed as a planet in astronomy books and tables (along with 2 Pallas, 3 Juno and 4 Vesta) for about half a century until further asteroids were discovered.[17][25][35]
    However, as other objects were discovered in the area it was realised that Ceres represented the first of a class of many similar bodies.[17] In 1802 Sir William Herschel coined the term asteroid ("star-like") for such bodies,[35] writing "they resemble small stars so much as hardly to be distinguished from them, even by very good telescopes".[36] As the first such body to be discovered, it was given the designation 1 Ceres under the modern system of asteroid numbering.[35]

    they got over it WHEN THE NEIGHBORHOOD WAS FOUND TO BE FULL OF SUCH MIDGETS

    sound familiar? when the deluge of asteroids came in, people thought "uh, its going a little crazy with these planets here, lets lop off the pretenders". now, as they search and catalog the oort cloud, they find that pluto's experience is like ceres's experience in the asteroid belt: planet, until the deluge of neighbors, then demotion. its happened before, its happening again. there's no claim to pluto's status except nostalgia. they got over it in the 1800s, you can get over it now

    pluto was discovered in in 1930, and kicked out of the club in 2006. that's a nice 75 year run, 50% more time than ceres

    the only thing you have going for your clinging to pluto is adherence to tradition. that's not a good reason to say everything and its uncle is a planet, just to preserve pluto's status. its far easier to lop off pluto, consider us to have 4 (rocky) +4 (gas) planets, and be done with it. everything else is dwarf planet/ comet/ asteroid/ etc.: detritus, flotsam and jetsam, left over rocks, of lower import than the main 8

    simple, easy, case closed

    --
    intellectual property law is philosophically incoherent. it is your moral duty to ignore it or sabotage it
    1. Re:once upon a time by Beowabbit · · Score: 1

      the only thing you have going for your clinging to pluto is adherence to tradition.

      If this is addressed to me, I think you misunderstand me. I fully agree that there's no more reason to call Pluto a planet than Quaoar, Sedna, Ceres, and lots of other stuff. Tradition (of the last 75 years) would call Pluto a planet but not Sedna, and I agree that makes no sense. I think, though, that the thing to aim for in a definition of "planet" (if it needs to be defined at all) is "the sort of thing that planetary scientists study", and that category definitely includes asteroids and TNOs and comets, and is starting to include extrasolar planets. I also believe that a definition that includes them would be less arbitrary and ambiguous than the IAU's current one.

      Ultimately, it's just semantics. However, if the categories we use slow down discovery by making it harder to take seriously, fund, and disseminate the work of people studying TNOs and asteroids than to take seriously the work of (much better understood, by and large) classical terrestrial planets, then I don't think the categories are well chosen.

      Now, I don't think planetary scientists, for the most part, make their decisions based on arbitrary terminology. But to take a concrete example, given how precarious its funding seemed from time to time, I suspect New Horizons would not have gotten funded if Pluto had never been considered a planet. And that would have been a shame. It will similarly be a shame if in 2035 a probe to Haumea doesn't get funded because Congress or the Duma or the National People's Congress thinks it doesn't make sense to spend that kind of money on something that isn't even a planet. Planetary scientists know the IAU definition is just one arbitrary place to draw the line, and that Pluto (and Eris and Makemake and Haumea) are probably going to be just as rewarding to study as Mercury, but to the extent that the terminology stands in the way of the wider culture understanding that, it's kind of unfortunate.

      I have to say, I'm kind of fond of the "four planets and some rubble" definition, though. :-)

    2. Re:once upon a time by laurele · · Score: 1

      Case not closed. The demotion of Ceres was wrong. It is not just another asteroid, as it is large enough to be in hydrostatic equilibrium (rounded by its own gravity) and to be geologically differentiated. Nineteenth century astronomers couldn't resolve Ceres into a disk because their telescopes weren't powerful enough. Today, we know Ceres is round and therefore a small planet rather than a large asteroid. The argument that it is only emotion or tradition supporting Pluto's planet status is a straw man, a nice way of trying to discredit those who disagree with you. The IAU decision of 2006 was done by four percent of its members, most of whom are not planetary scientists, and was rejected by hundreds of professional astronomers in a formal petition led by New Horizons Principal Investigator Dr. Alan Stern. A good definition of planet must take into account not just where an object is, but what it is. The IAU definition does not do that. In fact, according to the IAU definition, if Earth were put in Pluto's orbit, it would not clear that orbit either. A definition that takes the same object and makes it a planet in one location and not a planet in another is not very useful. It make scientific sense to keep the term planet broad to encompass any non-self-luminous spheroidal body orbiting a star. We can then distinguish different types of planets by using subcategories. Dwarf planets should simply be a subcategory for objects large enough to be in hydrostatic equilibrium but not large enough to gravitationally dominate their orbits.

  34. that's lame! by circletimessquare · · Score: 1

    Now, I don't think planetary scientists, for the most part, make their decisions based on arbitrary terminology. But to take a concrete example, given how precarious its funding seemed from time to time, I suspect New Horizons would not have gotten funded if Pluto had never been considered a planet. And that would have been a shame.

    what?!

    it would be a shame to go to pluto JUST BECAUSE it is mistakenly considered a "planet." the shame would be making visitations based on historical nostalgia, rather than sound science. there's hundreds if not thousands of scientifically intriguing objects out there that are mostly anonymous but show something very intriguing to science, like a dozen gas giant moons that are much more interesting than pluto according to all sorts of avenues of discovery, or something having a ridiculously huge albedo for its size, whose composition therefore is very interesting,

    or something like this freak, the giant metal dog bone asteroid:

    http://en.wikipedia.org/wiki/216_Kleopatra

    or the rubble pile asteroid:

    http://en.wikipedia.org/wiki/253_Mathilde

    or the potato asteroid with a moon:

    http://en.wikipedia.org/wiki/243_Ida

    the peanut asteroid:

    http://en.wikipedia.org/wiki/4179_Toutatis

    binary contact asteroids:

    http://en.wikipedia.org/wiki/Contact_binary_(asteroid)

    etc, etc.:

    http://upload.wikimedia.org/wikipedia/commons/7/72/Iau_dozen.jpg

    look, there are now 480,000 catalogued minor planets and nearly 69 MILLION observations (that could be double observations or new objects, not investigated fully yet). and its growing every year by hundreds of thousands

    http://www.cfa.harvard.edu/iau/lists/ArchiveStatistics.html

    i would say at least 1,000 of those objects are more worthy, for scientific reasons, of exploration than pluto

    howabout the centaurs (really out there)? howabout the trojans (locked in orbit with jupiter)? howabout the apohele (smaller than earth's orbit)?

    http://www.cfa.harvard.edu/iau/lists/MPLists.html

    in short, fuck pluto: it gets WAY more attention than it deserves

    --
    intellectual property law is philosophically incoherent. it is your moral duty to ignore it or sabotage it
  35. So how many moons should we have? by mdwh2 · · Score: 1

    the only thing you have going for your clinging to pluto is adherence to tradition

    Nonsense, that wasn't his point at all. His point is that drawing a line between Mercury and Pluto is no better than drawing a line just below Pluto. And he's saying that your argument of "But we can't have too many planets" is a weak one. I agree with him on both points.

    Do you think that all of the small moons should have their moon status revoked? There are hundreds of moons now in the solar system, including some that are only a kilometre across!

  36. you draw the line somewhere by circletimessquare · · Score: 1

    the line between the 4 gas giants and the rest is a big one. that would work

    the line between the 4 gas giants + the 4 (major) inner rocky planets and all the rest is another big obvious cut off point. that would work too

    below that, it gets very murky very quickly in terms of valid, easily defined criteria

    so your logical choices are:

    1. 4 planets

    or

    2. 8 planets

    or

    3. 482,419 planets and counting

    http://www.cfa.harvard.edu/iau/lists/ArchiveStatistics.html

    you choose. i'm going with 8

    --
    intellectual property law is philosophically incoherent. it is your moral duty to ignore it or sabotage it
    1. Re:you draw the line somewhere by mdwh2 · · Score: 1

      How many moons do you think we should have? Shouldn't we limit that, for the same reasons?

      The radius of Mercury is 2,439km. The radius of Pluto is 1,153km, and the radius of Eris is 1,300km. So that's not even a factor of 2 separating your supposed "big obvious cut off point". We'd better hope we don't find anything else larger than Eris but smaller than Mercury.

      I'm not saying the current system is wrong, I'm just saying it's still arbitrary, and the idea that there must only be a few planets is not a particularly strong one scientifically. There is no reason why "planet" needs to be a fixed, small, easily countable number - you don't have geologists having these arguments on the definition of a mountain ("But if you allow something smaller than my arbitrary height, next thing you know you'll be saying every pebble counts as a mountain, and there'll be millions of them!")

      If aliens found the solar system for the first time, I can't help feeling the most likely classification would be: One star, 4 gas giants, and a large number of rocky "whatever", of which Earth is the largest.

      Perhaps we'd be better off adopting the Star Trek classification system (we have a "Class" system for stars, after all)...

    2. Re:you draw the line somewhere by Jiro · · Score: 1

      My personal definition of a planet would be "something big enough that scientifically interesting things on it happen that only happen on big objects". This would define Pluto as a planet, and probably not define most of the smaller Kuiper belt objects like Makemake as planets (Eris probably should be one).

    3. Re:you draw the line somewhere by Tim+C · · Score: 1

      That would also catch things that are definitely moons, such as Europa and Titan.

  37. the cut off between mercury and all other planets is a severe drop off

    likewise, if it doesn't orbit the sun, its a moon. completely different issue

    and yes people have constant arguments over what constitutes a mountain, in fact it spilled over into farce because of national pride in one case:

    http://www.guardian.co.uk/uk/2008/sep/19/wales

    they even made a movie about it starring hugh grant:

    http://en.wikipedia.org/wiki/The_Englishman_Who_Went_Up_a_Hill_But_Came_Down_a_Mountain

    so what you do, to avoid all this pointless hullabaloo, is you pick the most obvious simple cut off, and go with it. and that cut off means there are eight planets

    endless mindless posturing to the contrary

    --
    intellectual property law is philosophically incoherent. it is your moral duty to ignore it or sabotage it
  38. Obligitory Mitch Hedburg quote by downix · · Score: 1

    I think Pluto is blurry, that's the problem. It's not the telescope's fault. Pluto is blurry, and that's extra scary to me. There's a large, out-of-focus plantoid roaming the solar system. Run, he's fuzzy, get out of here

    --
    Karma Whoring for Fun and Profit.
  39. cue grammar nazi twitch by Taibhsear · · Score: 1

    Astronomers were very surprise to seen that Pluto's brightness has changed over a few years.

    Looks like Discovery News needs a new editor.

  40. yes by mdwh2 · · Score: 1

    the cut off between mercury and all other planets is a severe drop off

    Not even a factor of 2 is not a "severe drop off".

    likewise, if it doesn't orbit the sun, its a moon. completely different issue

    I'm not saying that moons are planets. I'm asking you what you think the definition of a moon should be? If you're happy having hundreds of moons, why doesn't this apply for planets?

    so what you do, to avoid all this pointless hullabaloo, is you pick the most obvious simple cut off

    The most obvious cut off would surely be that of the gas giants. The rest is pretty arbitrary.