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Hot Jupiters May Indicate Hospitable Planets

eldavojohn writes "An interesting article from National Geographic points out that other solar systems which contain planets like a 'Hot Jupiter' have a higher chance of also containing Earth-like planets." From the article: "'We now think there is a new class of ocean-covered--and possibly habitable--planets in solar systems unlike our own,' Raymond said. The simulations also showed that rocky planets known as hot Earths may often form when hot Jupiters push material forward during their inward treks. But hot Earths, which can be up to five times bigger than our Earth, orbit closer to their stars and are not likely to support life. Even if water does contribute to their formation, most hot Earths probably end up dry, study co-author Raymond says. "

162 comments

  1. There has to be a joke somewhere here.... by lecithin · · Score: 0, Offtopic

    Hot planets

    inward treks

    Five times bigger

    probably end up dry

    --
    It could be worse, it could be Monday.
    1. Re:There has to be a joke somewhere here.... by Duhavid · · Score: 4, Funny

      Would you hit it?

      Enough gravity, and you may not have a choice.

      --
      emt 377 emt 4
  2. Title inconsistent with summary by WilliamSChips · · Score: 3, Funny

    At first it says that a Hot Jupiter would make a habitable planet, but then it says that the Hot Earths it makes will be uninhabitable.

    --
    Please, for the good of Humanity, vote Obama.
    1. Re:Title inconsistent with summary by w33t · · Score: 1

      Well, I think they are saying that hot earths may form some of the time; not always - but I see nothing which rules out regular earths being formed as well.

      For instance, I wonder if it might occur that a hot Jupiter and Sun might form peculiar kinds of Lagrangian points where debris may coalesce into habitable planets.

      Perhaps this planet could remain in a perpetual eclipse of the hot Jupiter, allowing earth-like temperatures to exist.

    2. Re:Title inconsistent with summary by geekoid · · Score: 1

      Since there still is not consenseus among scientist what the definition of 'planet' it, it is premature to say whether it is or isn't.

      The recent vote does not equal consenseus.

      There is no logcal reason for it not to be a planet.

      Personally, I don't think it should be included as a planet;However telling my young daughter that Pluto may no longer be considered a planet made her cry. Based on that I might rethink my position.

      Interestingly enough, Charon qualifies as a planet under the new definition.

      --
      The Kruger Dunning explains most post on /. http://en.wikipedia.org/wiki/Dunning%E2%80%93Kruger_effect
    3. Re:Title inconsistent with summary by kalidasa · · Score: 1

      Actually, no, Charon does not qualify as a planet under the new definition: it has not cleared its orbit any more than Pluto has.

    4. Re:Title inconsistent with summary by Harmonious+Botch · · Score: 1

      L4 and L5 might exist, but as TFA notes the Hot Jupiter would have an orbit smaller than Mercury. They would be too hot. Even with an R or N, I suspect. They also would probably be gravity locked, which tends to produce lethal weather.

      L2 ( the only shady one ) is not stable. Sorry.

    5. Re:Title inconsistent with summary by squiggleslash · · Score: 1

      Interestingly none of the large rocks between Jupiter and the Sun count as planets either under the new definition, as none can seriously be described as having cleared their paths (the relative lack of debris is largely due to Jupiter.)

      Ordinary English speaking people, using common definitions of the words: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, Pluto, and possibly others are planets.

      Astronomers being dicks: Actually you're wrong, Jupiter, Saturn, Uranus, and Neptune are the only planets. You need to lose this emotional attachment to the word "planet".

      English people to Astronomers being dicks: Actually you're not an astronomer. According to the new definition we just made up, an Astronomer is a person who looks at the skies, is well rounded with much gravitas, and has cleared the path of credibility to be taken seriously by ordinary non-astronomers. As a jack-ass, you clearly aren't that. You need to lose this emotional attachment to the word "astronomer".

      Astronomers being dicks: *curses* Damn. Foiled again.

      --
      You are not alone. This is not normal. None of this is normal.
  3. Cool, confirms my hypothesis. by Cybert4 · · Score: 0, Offtopic

    Here's what I've been kicking around:

    1. There was love.
    2. Love made 2.
    3. The 2 made a machine that makes universes. This machine is not sentient, however it can generate randomness.
    4. The 2 become the unknown number (maximum sentients possible). This number is even.
    5. A universe starts, and then repeats, according to the machine. The laws of physics in the next universe are not necessarily the same.

    Now these 2 are NOT man and woman. They are identical, perfect beings. Furthermore, they did not split up into man and woman sentients. It is only our body that has gender. Cats and dogs are sentient too.

    You have the anthropomorphic principle built in here. The machine won't make a universe without possibility of life--the 2 would not have programmed it that way. I think there's others out there, but the speed of light hasn't been broken (any may be unbreakable).

    1. Re:Cool, confirms my hypothesis. by ichigo+2.0 · · Score: 1

      I think saying "Cool, confirms my hypothesis." is stretching it a bit far... ;)

    2. Re:Cool, confirms my hypothesis. by eln · · Score: 4, Funny

      Yah, I sometimes post to Slashdot after hitting the bong too.

    3. Re:Cool, confirms my hypothesis. by Anonymous Coward · · Score: 0
      Hmph. I'll have 2 of whatever you're drinking.

      Cats and dogs are sentient too.
      Actually, just make it one.
    4. Re:Cool, confirms my hypothesis. by Anonymous Coward · · Score: 0

      This sounds like a Jimi Hendrix song....

    5. Re:Cool, confirms my hypothesis. by Digital+Vomit · · Score: 1

      What the hell are you talking about?!

      --
      Modern copyright is theft of culture from everyone and it retards the progress of the useful arts and sciences.
    6. Re:Cool, confirms my hypothesis. by Tackhead · · Score: 2, Funny
      > I think saying "Cool, confirms my hypothesis." is stretching it a bit far... ;)

      Depends. What if his original hypothesis was the result of a divide by fish error? Proof, I tell you. Or at least 180 proof.

    7. Re:Cool, confirms my hypothesis. by DragonWriter · · Score: 2, Informative

      Cats and dogs are sentient, as the term is generally used. The term has sometimes been borrowed in science fiction to denote human-like intellect, but given its well-established use, that's a poor borrowing (better is the more common "sapient" or, as a noun, "sophont"; the latter isn't a word in general use but has an appropriate etymology, the former is in general use, but in a way that supports the pseudo-technical extension of its meaning to this use better than "sentient".)

    8. Re:Cool, confirms my hypothesis. by Cybert4 · · Score: 1

      Ah yeah, was in a bit of a rush to get eyeballs. "Fits" my hyopthesis is a bit better.

    9. Re:Cool, confirms my hypothesis. by Anonymous Coward · · Score: 0

      How can this news confirm your hypothesis when it has nothing to do with nature's harmonious simultaneous 4-day time cube?

    10. Re:Cool, confirms my hypothesis. by Anonymous Coward · · Score: 0
      1. There was love.
      2. Love made 2.
      3. The 2 made a machine that makes universes. This machine is not sentient, however it can generate randomness.
      4. The 2 become the unknown number (maximum sentients possible). This number is even.

      5. A universe starts, and then repeats, according to the machine. The laws of physics in the next universe are not necessarily the same.

      Now these 2 are NOT man and woman. They are identical, perfect beings. Furthermore, they did not split up into man and woman sentients. It is only our body that has gender. Cats and dogs are sentient too.

      This is the dawning of the Age of Aquarius! Age of Aquarius! Age of Aquarius! Aquarius! AQUARIUS!

    11. Re:Cool, confirms my hypothesis. by geekoid · · Score: 1

      as someone whose eyeballs you got, I've only got one thing to say:

      Fuck you.

      --
      The Kruger Dunning explains most post on /. http://en.wikipedia.org/wiki/Dunning%E2%80%93Kruger_effect
    12. Re:Cool, confirms my hypothesis. by Anonymous Coward · · Score: 0

      YOU ARE EDUCATED STUPID

    13. Re:Cool, confirms my hypothesis. by regular_gonzalez · · Score: 1

      Hehehe. Next time I get mod points, coming back to mod you up :)

      --
      Due to circumstances beyond my control, I am master of my fate and captain of my soul.
  4. Space... the Final Frontier by TopShelf · · Score: 3, Funny

    What we need is a five-year mission to explore these strange, new worlds, seek out new life, and new civilizations...

    --
    Stop by my site where I write about ERP systems & more
    1. Re:Space... the Final Frontier by TheDreadSlashdotterD · · Score: 1

      Do you suggest we call it "Star Trek"? It'll probably just be called Orion, like everything else.

      --
      I have nothing to say.
    2. Re:Space... the Final Frontier by eln · · Score: 1

      I think we should call it Apollo and fake the whole thing, just to see if the conspiracy theorists' heads explode.

    3. Re:Space... the Final Frontier by Anonymous Coward · · Score: 0
      explore these strange, new worlds, seek out new life, and new civilizations


      You don't need to go to space for this, try leaving your parents basement sometime.
    4. Re:Space... the Final Frontier by Waffle+Iron · · Score: 2, Funny
      I've been studying extrasolar planets for exactly 40 years. My findings don't agree at all with the hypotheses presented in the article. Here is what I've found out:

      • All extrasolar planets have a mass and density such that gravitational acceleration at the surface is 9.8 m/s^2.
      • All extrasolar planets have an atmosphere breathable by humans and a surface temperature of approximately 70 degrees F.
      • Imaging shows that from space, in the visual wavelengths different extrasolar planets reflect a wide variety of random but usually Da-Glo colors. Few if any surface features are visible from space.
      • Nevertheless, the surface of most extrasolar planets are largely covered with a similar beige sandy soil. The planets have many rock outcroppings, and remarkably, the rocks are almost exclusively comprised of a polystyrene polymer.
      • All extrasolar planets harbor life. Almost all of them have a climate and flora very similar to the desert regions of southern California.
      • Most extrasolar planets have an unexplained energy field emanating from some point on the surface.
    5. Re:Space... the Final Frontier by geekoid · · Score: 1

      you're 40 years to late.

      --
      The Kruger Dunning explains most post on /. http://en.wikipedia.org/wiki/Dunning%E2%80%93Kruger_effect
    6. Re:Space... the Final Frontier by hazem · · Score: 1

      In my own studies, I've also noticed that most of them also have a strange fog that stays at about boot-height, accompanied by strange and haunting sounds that are almost musical.

    7. Re:Space... the Final Frontier by tylernt · · Score: 1
      We now think there is a new class of ocean-covered--and possibly habitable--planets
      Best to come up with names for things. I propose we call these planets... "M class" planets.
      --
      DRM 'manages access' in the same way that a prison 'manages freedom'
  5. My misread by matt+me · · Score: 1, Funny

    Hot Jupiters May Indicate Hospitable Penis.

    1. Re:My misread by jalet · · Score: 1

      Hospitable Penis May End Up In Hot Uranus

      --
      Votez ecolo : Chiez dans l'urne !
    2. Re:My misread by Ravear · · Score: 1

      Hmm. Well that explains the rings around Uranus...

    3. Re:My misread by rvandam · · Score: 1

      MY misread:

      Hot Jupiters May Indicate Hospital Plans

      --
      My religion is better than yours is.
    4. Re:My misread by Anonymous Coward · · Score: 0

      Throbbing tower of Orion may be placed into the moist and luxurious temple of venus.

  6. What an amazing exclamation! by Kamineko · · Score: 3, Funny

    "Hot Jupiter, Batman! What's going on here?"

  7. End up dry? by Anonymous Coward · · Score: 0

    What happens to an ocean-covered planet to have it eventually end up dry? Perhaps the same mechanism that removed most of the land-covering water after the Noachian flood?

    Kidding.

  8. Earth is here by helioquake · · Score: 1

    But hot Earths, which can be up to five times bigger than our Earth, orbit closer to their stars and are not likely to support life. Even if water does contribute to their formation, most hot Earths probably end up dry, study co-author Raymond says.

    Among a billion and billion of stars, it is statistically likely to find a planet or two to have just the right condition to hold water at the right temperature. Proof? Look at our planet.

    An interesting idea, in any case.

    1. Re:Earth is here by vertinox · · Score: 1

      Among a billion and billion of stars, it is statistically likely to find a planet or two to have just the right condition to hold water at the right temperature. Proof? Look at our planet.

      Oh but you run into the problem (or just case) of Anthropic Principle.

      Had the conditions on Earth or in our local or even macro-universe levels had been any different perhaps we wouldn't be around to notice.

      Only those places in the universe that support not only life, but the evolution of intelligent life... Or at least intelligent enough to observe and wonder if life is possible anywhere else in the universe... can we ever have those discussion or explorations on such a topic or research.

      Frankly it could be quite possible that life is very common in the universe, but it is not common for intelligent life to happen.

      I personally subscribe to the Rare Earth hyposthesis mostly because I believe it takes more than just billions of stars to have a single instance of life (much less intelligence).

      Otherwise where are all the life forms?

      Unless of course happen to first, intelligent life would find a way to metabolize the universe in order to prevent Heat Death or reverse the second laws of thermodynamic or have either altruism in order to save all forms of sentient life or out of fear exterminate all forms of other lifeforms to make sure it remains to the top dog sentient being out there.

      So far we haven't seen any evidence of anything like this going on... So either life is not very common in the universe or we just happen to be the first to acheive our level of intelligence.

      Or at least very close to others who maybe at an industrial or information technology level in their civilization...

      --
      "I am the king of the Romans, and am superior to rules of grammar!"
      -Sigismund, Holy Roman Emperor (1368-1437)
    2. Re:Earth is here by inviolet · · Score: 1
      Otherwise where are all the life forms?

      Um, staying home?

      Why drive out into the hostile empty vacuum of space? Home is much better. Especially once home has really good VR. Then you can jack in, fly around, have three-week-long orgasms, whatever.

      Seriously. Once real VR is invented, we're not going anywhere.

      This may have already happened. We may have even forgotten that we are in VR. It would certainly explain the odd computational features of our reality, such as the Law of Conservation of Information.

      Anyway, if aliens did visit the Earth, they certainly wouldn't have sent person-sized ships. Microscopic ships piloted by AI or virtual-people are vastly more efficient for crossing interstellar distances.

      --
      FATMOUSE + YOU = FATMOUSE
  9. That would be Hot Venus! by davidwr · · Score: 1

    Hot Mars if you are gay.

    Hot Jupiter you like a BBW.

    --
    Knowledge is how to play a game, intelligence is how to win, wisdom is knowing what game to play.
  10. Worst story title...EVAR! by SIGFPE · · Score: 2, Insightful
    The story actually says "We don't think that they're really good places to harbor life, if you need liquid water on the surface [to support life]."


    But of course if you can get more hits for advertising on /. by saying the complete opposite of the story then by all means do so.

    --
    -- SIGFPE
    1. Re:Worst story title...EVAR! by jemecki · · Score: 2, Informative

      You misread the article. The quote was referring to a "Hot Earth" which is similar to what a "Hot Jupiter" is, except earth-sized (i.e., really really close to the sun -- closer than Mercury is in our solar system). The habitable planet would be further away, in the habitable zone. Check out the picture.

    2. Re:Worst story title...EVAR! by QuantumFTL · · Score: 2, Informative
      The article also says:
      "We now think there is a new class of ocean-covered--and possibly habitable--planets in solar systems unlike our own," Raymond said.


      I think they may be talking about two different things (Hot Earths and Normal Earths).
  11. There's a perfectly good word for rocky worlds by StefanJ · · Score: 4, Informative

    Rather than the clunky, misleading, and overly broad use of "Earth like," I wish articles like this would use the perfectly good term "terrestrial."

    Mercury, Venus, Mars and Earth are all terrestrials. Rocky worlds, as opposed to gas giants or icy bodies.

    1. Re:There's a perfectly good word for rocky worlds by WilliamSChips · · Score: 1

      "Terrestrial" is the Latin for "earthlike".

      --
      Please, for the good of Humanity, vote Obama.
    2. Re:There's a perfectly good word for rocky worlds by DragonWriter · · Score: 1
      Rather than the clunky, misleading, and overly broad use of "Earth like," I wish articles like this would use the perfectly good term "terrestrial."
      While its more accurate domain-specific jargon, its really not any more communicative to anyone else, I mean in

      common use? it means pertaining to, consisting of, or representing the earth as distinct from other planets, which is pretty close to precisely the opposite of the distinction you are trying to make here, and the natural interpretation from the etymology is "earthlike". For use to a non-astronomically-technical audience, "rocky world" is probably best, and "Earth-like" is no less clear than "terrestrial".

    3. Re:There's a perfectly good word for rocky worlds by morgan_greywolf · · Score: 4, Informative
      "Terrestrial" is the Latin for "earthlike".


      Not exactly. I think you're looking for terrestris, which means earthlike in Latin.
    4. Re:There's a perfectly good word for rocky worlds by Peyna · · Score: 1

      Actually, "terrestrial" would mean "of the earth". A "terrestrial planet" would mean a planet that is on the surface of the earth somewhere. Kind of an awkward usage actually.

      --
      What?
    5. Re:There's a perfectly good word for rocky worlds by Surt · · Score: 3, Funny

      We should publicize that more heavily, then the bush administration will spend more on space technology so we can take the war on terrestris to other star systems.

      --
      "Who is the Journal of Quantum Physics going to believe?" --Stephen Hawking
    6. Re:There's a perfectly good word for rocky worlds by Moofie · · Score: 1

      "terrestrial" would be pertaining to Terra, which is the latin name for this particular planet we're all occupying.

      So, yeah, not such a good substitute. Nice try, though.

      --
      Why yes, I AM a rocket scientist!
    7. Re:There's a perfectly good word for rocky worlds by popeye44 · · Score: 1

      Speaking of Icy Bodies has anyone seen my ex wife? yeesh.. she could kick the heater on just by uncrossing her legs!

      --
      Inane Comments are Generously Disregarded
    8. Re:There's a perfectly good word for rocky worlds by Firehed · · Score: 1

      Now tell me, what's Latin for 'pedant'?

      --
      How are sites slashdotted when nobody reads TFAs?
    9. Re:There's a perfectly good word for rocky worlds by Shadyman · · Score: 1

      terrestris

      Not exactly. I think you're looking for TETRIS

    10. Re:There's a perfectly good word for rocky worlds by WilliamSChips · · Score: 1

      Paedans, paedantis, IIRC.

      --
      Please, for the good of Humanity, vote Obama.
    11. Re:There's a perfectly good word for rocky worlds by WilliamSChips · · Score: 1

      The "-ial" is one of the many endings English adds to Latin words in order to make it sound Englishy or something. Much like how "-ical" and "-alic" are the endings to a lot of English words but "-icalis" and "-alicus" in Latin are much less common.

      --
      Please, for the good of Humanity, vote Obama.
    12. Re:There's a perfectly good word for rocky worlds by accessdeniednsp · · Score: 1

      oh please mod parent up!!

    13. Re:There's a perfectly good word for rocky worlds by Anonymous Coward · · Score: 0

      Damn near everyone has seen your ex-wife.

  12. Author's blog: by Anonymous Coward · · Score: 1, Informative

    For more information, see the blog entry of Penn State astronomy professor Steinn Sigurðsson, one of the coauthors of this paper.

  13. Sign up now by Kesch · · Score: 3, Funny

    Step 1) Discover possibly habitable worlds (or get others to do it for you)
    Step 2) Sell acreage on said worlds
    Step 3) Profit!

    There is no ??? here, it's a pure goldmine. I have to hop on this right away (PATENT PENDING PATENT PENDING PATENT PENDING).

    Once I run out of acreage on discovered planets, I'll just start selling space on the next discovered one.

    C'mon you know you want a beach house in an entirely different galaxy (nevermind that the beach overlooks an ocean of magma).

    --
    If this signature is witty enough, maybe somebody will like me.
    1. Re:Sign up now by geekoid · · Score: 1

      " (nevermind that the beach overlooks an ocean of magma)."

      Are you kidding me? thats a plus in my book!
      --Capt. Magma

      --
      The Kruger Dunning explains most post on /. http://en.wikipedia.org/wiki/Dunning%E2%80%93Kruger_effect
    2. Re:Sign up now by Kamineko · · Score: 1
      I'll just start selling space on the next discovered one.


      You've missed a trick there: while you're selling land, I'll be the one selling space itself.

  14. 100% offtopic by bunions · · Score: 4, Funny

    "Hot Jupiters!" has just become my favorite exclamation, bumping "Good Gravy!" off the list and pushing "OH BOY OH BOY OH BOY!!!" down to the #2 spot.

    --
    there is no need to sign your posts. this isn't usenet. your username is right there above your post. stop it.
    1. Re:100% offtopic by geekoid · · Score: 1

      yu know, I am going to make a point of using that expresion.
      In fact, I usrg all readers of /. to use the expression and see how long it takes to show up in a quote unrelated to astronomy.

      --
      The Kruger Dunning explains most post on /. http://en.wikipedia.org/wiki/Dunning%E2%80%93Kruger_effect
  15. Hot Titans? by darkonc · · Score: 2, Interesting
    Well, if you have a hot jupiter, perhaps you could have earthlike conditions on the moons of the hot jupiter. We're pretty close with Titan. If jupiter were a brown dwarf, it might be just enough to put Titan or one of the other moons into a habitable zone -- You'd also have good tidal action to help push life onto the dry land.

    Has anybody exhaustively explored the concept?

    --
    Sometimes boldness is in fashion. Sometimes only the brave will be bold.
    1. Re:Hot Titans? by DragonWriter · · Score: 1

      Titan's a moon of Saturn, so if Jupiter was a brown dwarf it wouldn't do much. Then again, while it has a substantial atmosphere (uniquely among all moons in the Solar System), I'd hardly say it's "pretty close" to earthlike conditions, other than having a dense, mostly-nitrogen atmosphere.

    2. Re:Hot Titans? by Surt · · Score: 3, Funny

      Has anybody exhaustively explored the concept?

      I got tired just thinking about it.

      More seriously: of course not .. we barely have any understanding what's going on with this planet, much less hypothetical other planets in surprising new types of planetary systems.

      --
      "Who is the Journal of Quantum Physics going to believe?" --Stephen Hawking
    3. Re:Hot Titans? by MichaelSmith · · Score: 3, Interesting
      Well, if you have a hot jupiter, perhaps you could have earthlike conditions on the moons of the hot jupiter.

      If those moons were at least as massive as Mars, and preferably Venus or Earth there might be a chance of this working. Titan has its volatiles because it is cold. Heat it up and you are left with a small rocky moon.

    4. Re:Hot Titans? by Anonymous Coward · · Score: 0

      Well, these Jupiters are hot due to the sheer amount of energy pouring in from the nearby star. So all the moons will be just as hot (too hot for liquid water)

      Though for the sort of thing you're thinking of, Stanley G. Weinbaum wrote stories in the 1930s where the heat radiating from gas giant planets gave their moons habitable temperatures, as in The Mad Moon and other stories such as Tidal Moon

      Cool! The CAPTCHA word for this sunbmission is "Planets"!

    5. Re:Hot Titans? by Plutonite · · Score: 1

      That was probably the most insightful thing I've read all week. Why do people like to make up random, shitty postulations about things so clearly out of their reach in terms of empirical evidence? Why can't they just sit down for a while and wait until something has really been done worth talking about, and maybe throw in some mathematically verifiable hypotheses?

      Human beings are complete a-holes, in my opinion.

    6. Re:Hot Titans? by griffjon · · Score: 1

      Has anybody exhaustively explored the concept?

      Not counting Arthur C. Clark in 2010?

      --
      Returned Peace Corps IT Volunteer
    7. Re:Hot Titans? by nizo · · Score: 1

      My guess is a big story about habitable planets sells more magazines than one titled, Crap, We Really Don't Know Anything.

    8. Re:Hot Titans? by ceoyoyo · · Score: 1

      Because we're curious and have imaginations?

      We like to look at things and say "what if?" Sometimes we forget that's all it is though, people start taking sides and you end up with lots of excitement over some random thought or observation.

    9. Re:Hot Titans? by Plutonite · · Score: 1

      It's great to have an imagination, and to reflect all the time..in fact, it's the main driving force in human intelligence.

      However, publishing something in a magazine is very different from pondering about it over breakfast.

    10. Re:Hot Titans? by ceoyoyo · · Score: 1

      Oh yes, sharing ideas so other people can think about and be inspired by them is bad. Very, very bad.

      Did you read the article? It's quite good for a science article (it is in National Geographic rather than some newspaper). The title has the word "could" in it and the article explains how the results are from simulations. Nobody's gone and published an article that says "all solar systems with big planets have other Earth's with intelligent life!" or anything.

      But yeah, I guess scientists should confine themselves to easy observations and well understood phenomenon. Just look at those dorks last century with "transistors!" Fooling around with things they didn't understand and can't even SEE! Worse yet, they started using "quantum mechanics!" That stuff doesn't even make sense! A-holes.

  16. You must be new here... by multipartmixed · · Score: 4, Funny

    ...the term for an "earth-like" planet is "Class M".

    These scientists, however, are talking about "Hot Earths" -- which would be "Class L" planets.

    --

    Do daemons dream of electric sleep()?
    1. Re:You must be new here... by Jeff+DeMaagd · · Score: 1

      Or they may be referring to any planet that generates green-skinned alien hotties, like the ones Capt. Kirk tends to meet on most planetery missions.

    2. Re:You must be new here... by FleaPlus · · Score: 1

      > These scientists, however, are talking about "Hot Earths" -- which would be "Class L" planets.

      Not to nitpick, but are you sure they wouldn't be class B planets instead?

      http://en.wikipedia.org/wiki/Star_Trek_planet_clas sifications#Class_B_Geomorteus

      Young planets, Class B worlds are less than 10 billion years old. Their diameters range in size from 1,000 to 10,000 km. They are located in the hotzone region of a star's solar system. Their surfaces are partially molten and may feature active volcanoes with an overall high surface temperature. Their atmospheres, if any, are extremely tenuous, with few active gases. They almost never have life forms.

      Example: Mercury (Sol I)

    3. Re:You must be new here... by multipartmixed · · Score: 1

      Good point -- Class B actually does seem to describe what TFA is talking about more accurately than Class L.

      Oddly enough, the error here isn't in my understanding of the planet classification system used in Star Trek; rather, my understanding of TFA in the first place (hey, I glossed over it; this is /. afterall!).

      I think this goes to prove that current science still has a lot to learn from Michael Okuda and his bretheren! ... At least NASA has finally hire Mike for *something* (Orion Patch).

      --

      Do daemons dream of electric sleep()?
  17. other solar systems??? by devbone · · Score: 0

    Since when is there more than one solar system? Are there multiple stars other then our own sun with the name Sol? I guess the uneducated masses have relegated solar system to the same generic status as xerox.

    --
    Devon in Denver
    1. Re:other solar systems??? by spun · · Score: 1

      I went to look up the exact definition of solar system on wikipedia, and wouldn't you know it, the number of solar systems has tripled in the last six months!

      --
      - None can love freedom heartily, but good men; the rest love not freedom, but license. -- John Milton
    2. Re:other solar systems??? by Anonymous Coward · · Score: 0

      "I went to look up the exact definition of solar system on wikipedia, and wouldn't you know it, the number of solar systems has tripled in the last six months!"

      Well, I'll fix that!

  18. Hot Uranus? by Anonymous Coward · · Score: 0

    How about a hot Uranus? Is that what they call a black hole?

  19. The drunk that is looking for his coin by viking2000 · · Score: 1

    This study is a little bit backwards. The underlaying problem is that we can not detect if nearby stars have planets like ours. We only have resolution to find big planets that orbit hot. And of course, since this is the only thing we can see, we see this often. And of course since we can not see small rocky planets 150Mkm from a star, we do not see any solar systems like ours.

    So now we have found a buch of "Hot Jupiters", and not earths with water, and what do we do?

    Well, we do just like the drunk that is looking for his lost coin under the street-light, even though he lost it in the dark alley:

    Just change the theory from "No earthlike planets in systems with a hot Jupiter" to "Many earthlike planets in systems with a hot Jupiter"

    Here is my bet: As soon as instruments become sensitive enough to see extrasolar earthlike planets, we will find a lot of them. Further, they will be the ones we find life on. Not the ones with a close orbiting (i.e. hot) jupiter type planet.

    Would be interesting to see the actual simulation they have done to see how this is modelled.

    1. Re:The drunk that is looking for his coin by Giddy+Lombardo · · Score: 1
    2. Re:The drunk that is looking for his coin by clean_stoner · · Score: 1
      And of course since we can not see small rocky planets 150Mkm from a star, we do not see any solar systems like ours.

      Mkm. Hmmmm, I've never heard of such a unit. I believe the proper SI unit you were looking for is Gm.

      /unit Nazi

      --

      Sigs are for the weak.

  20. Read the article first please by LionMage · · Score: 3, Informative
    At first it says that a Hot Jupiter would make a habitable planet, but then it says that the Hot Earths it makes will be uninhabitable.


    If you read the article, it's a bit more clear than the summary apparently was for you.

    The article is saying that as Hot Jupiters migrate inwards, they temporarily disrupt the belt of debris in the habitable zone of a forming solar system. Then, after the Hot Jupiter has passed through, that debris has a chance to coalesce into habitable, Earth-like planets. In addition to this (and this is where careful reading and good reading comprehension skills come in handy), Hot Earths can be formed when Hot Jupiters push some material forward with them during their inward migration. From the article:

    "We now think there is a new class of ocean-covered--and possibly habitable--planets in solar systems unlike our own," Raymond said.

    The simulations also showed that rocky planets known as hot Earths may often form when hot Jupiters push material forward during their inward treks.

    (Emphasis added.)
  21. Cool, this confirms how high I am! by spun · · Score: 2, Insightful

    Jeebus, buddy, why start with love? Why not just start with randomness? You have enough of that, you automatically have everything else you mentioned. And you have an infinite amount of that. Any particular slice of that randomness might define a starting condition, a set of rules to eveolve the starting condition, or a point along that evolution.

    Love is such a hokey place to start. Why not shoot higher? Start with awareness, or consciousness, or reference, or division or some other abstract concept that hasn't already been done to death. Love. Fegh. I did that one when I was four. Not that it's not nice and all, but starting from there necessarily leads to some mind numbing inconsitencies when you think far enought through the implications.

    Here's a fun one: You start with a lack of any definition whatsoever. This lack of definition necessarily includes all possible definitions as well as all lack of definition, to say it doesn't is to define it. So zero is not nothingness any more than it is the lack of nothingness. Some definitions imply a set of laws and a starting condition, also conveniently contained within our infinite undefined nothingness. Zero becomes one because it needs something to refer to it, and one becomes two for the same reason. The Ain Soph becomes the Way, which becomes Yin and Yang. Yang is nothing, refering to everything. Yin is everything, refering to nothing, and the way is the laws which move the two forward, becoming the ten-thousand things (or the world, as it is called in Buddhist philosophy.) I just made that one up off the top of my head.

    Honestly, you kids these days, you think you invented this shit. Gah, stinks of the dharma, doesn't have a teacher to indoctrinate him into a particular path: this is what we get. "It's all love!" Well, you know where that leads?

    God is love.
    Love is blind.
    Stevie Wonder is blind.
    Therefore, Stevie Wonder is God.

    Seriously, you should read a bit more of the classics.

    --
    - None can love freedom heartily, but good men; the rest love not freedom, but license. -- John Milton
  22. Don't be so quick to judge by LionMage · · Score: 4, Informative

    Um, no, you just read the story wrong. The story is saying that both "hot Earths" and habitable, Earth-like planets can form in systems that have so-called hot Jupiters.

    It amazes me how some folks are so quick to judge something that they actually wind up demonstrating their own ignorance (or inability to comprehend a slightly confusing science article, take your pick).

    1. Re:Don't be so quick to judge by accessdeniednsp · · Score: 1

      despite your mid-range user id, you must have been away for a while.

    2. Re:Don't be so quick to judge by LionMage · · Score: 1

      Nah, but it's more a case of "hope springs eternal" with me. As in, I hope people will act smarter than they often do.

  23. Ha ha by Anonymous Coward · · Score: 0

    Big karma loss. That was totally not worth it. Now you have to do the subscribe, whore first post, karma game.

  24. i like space meat by Scott · · Score: 1

    I am itching for the day of fast, inter-galaxy travel to strange habitable planets with vast oceans and crazy giant sea creatures. I just hope they can shoot HBO out there, can't miss the next season of Entourage.

  25. Somewhat corehent by Cybert4 · · Score: 1

    Well, your somewhat coherent parts are interesting. You could start with randomness, then you get:

    1. There is random.
    2. Random makes a random amount of sentients (which may not be even!)
    3. Random start a universe.
    4. Repeat 3.

    But the problem is that a universe made by Random would not have the kind of order we see. You could introduce the anthropic principle here, but still you could have the situation of an Earth with stars that swirl around in the sky all night for no reason.

    1. Re:Somewhat corehent by spun · · Score: 1

      You forgot the infinite part. Read Borges'"The Library of Babel". Like I said, you need to read more of the classics, so you know what's already been done, and so you have a few more pieces in your tinkertoy set.

      --
      - None can love freedom heartily, but good men; the rest love not freedom, but license. -- John Milton
    2. Re:Somewhat corehent by spun · · Score: 1

      A few more thoughts. You haven't meditated enough on the concept of infinity. And you're WAY too caught up on meaning. You know what Bodhidarma said when asked the meaning of life? "Three pounds of flax." But I think he was being way too specific.

      --
      - None can love freedom heartily, but good men; the rest love not freedom, but license. -- John Milton
  26. We must explore these planets by CrazyJim1 · · Score: 1

    We could use more hot earth women.

    1. Re:We must explore these planets by geekoid · · Score: 0, Offtopic

      God spoke to me. [geocities.com]

      or it came from your own brain.

      And the prophesies in the bible are jsut as riddled with holes as nostradaumas. your desire to believe makes you see patterns. Just like your brain will look for a pattern when a hand full of rocks is thrown to the ground.

      --
      The Kruger Dunning explains most post on /. http://en.wikipedia.org/wiki/Dunning%E2%80%93Kruger_effect
  27. Infinite what? by Cybert4 · · Score: 1

    Infinite sentients? I do have infinite, in that I have 4--Goto 3.

  28. Ah yeah, Borges by Cybert4 · · Score: 1

    Think I came across that in Kevin Kelly's book "out of control". I just remember snickering to myself, thinking that it really should have been an anonymous essay. Broges seemed to want to take a lot of credit for a piece that argued that nobody should really take credit for coming up foo stuff.

  29. Hey, I got punished. by Cybert4 · · Score: 1

    Karma's hard to earn, y'know!

  30. Better Article(s) by AJWM · · Score: 1

    The article is rather confusingly written, surprising for National G.

    A better one (IMHO) can be found here, and mentions that that Raymond et al's paper is in the current issue of Science .

    There's also a summary in Science Now .

    --
    -- Alastair
  31. Who says inhabitable is really inhabitable? by gd23ka · · Score: 2

    26.03.2137 1500 Entry #135811
    Donny had an accident today and was exposed to the xenosphere out there. I'm starting to get a little worried here
    because this morning he was still fine, four hours into the quarantine period but Walt says from what he's been
    able to tell Donny has started coughing up bloody phlegm.
    26.03.2137 2000 Entry #135812
    Walt convinced me to let him take the portable xray into the airlock and took pictures of Donny's lungs.
    From what I understand the situation couldn't be worse. According to Walt his lungs and bronchial tubes are
    filling up with some sort of xenobiological organism kind of like a mold. Walt is trying out all sorts of
    antibiotics and antiviral medication but it doesn't look good.
    27.03.2137 0100 Entry #135813
    Donny died a terrible death just minutes ago 0005 hours choking and going into convulsions. He was only exposed
    to the atmosphere of this world for maybe four minutes until he got back into the lock but that's obviously all it
    takes to get infected. To think that this planet looks so earth-like, the clear lakes and rivers and even the
    atmosphere is remarkably close to Earth but then when you see this odd yellowish vegetation not really definable
    in Earth terms as fungus, plant or animal, rather some odd mix of the characteristics of all of these... that
    life is really hostile, I don't think people will ever be able to live here. Anyhow we buried Donny minutes after
    and I think going from the discoloration on his left cheek that some of it was working it's way into his system
    through the skin too but that will probably be explored in depth in Walt's medical report.

  32. Very strange, how unlikely by mangu · · Score: 1
    either life is not very common in the universe or we just happen to be the first to achieve our level of intelligence.


    Considering that Earth-like planets may have been created billions of years before our own, I don't think it very probable that we would be the first, unless intelligent life is very unlikely to happen. For instance, how about the rather improbable asteroid collision that scientists believe killed the dinosaurs. If it had not happened, Earth could have had intelligent life 50 million years ago.


    Taking into account all the parameters in Drake's equation, we have very many stars in our galaxy, and we are finding that many of them have planets. We still don't know how many of those can develop life, but it's obvious that some of the other parameters must have very low values, or we would have found many extra-terrestrial civilizations by now.


    Perhaps the probability of developing life is very low. Suppose, for instance, that life in our planet first arose in tidal flats. In that case, having a sizable moon would be needed, it could be uncommon for planets in the habitable zone. Or perhaps the habitable zone is very narrow. Or maybe a planet needs exactly the same proportion of water as ours have.


    Having developed complex life forms, I think intelligence is not uncommon. We have several mammal species that display rather advanced intelligence, and some forms of birds and mollusks seem to have intelligence to varied degrees. Intelligence seems to be inevitable, given a big enough brain. Maybe there is an upper limit on how much it will develop, although I think it's unlikely, given the competitive advantage our species is showing in occupying the other species' habitats. Of course, it took our own planet 4.5 billion years to develop intelligence, and the dinosaurs apparently existed for hundreds of millions of years without developing any form of superior intelligence, this seems to be an argument for a natural "cap" on the highest level of intelligence that will be developed in an ecosystem.


    Assuming intelligence exists, I think it's almost inevitable that search for extra-terrestrial life forms will happen sooner or later. Intelligence implies curiosity, it's a very strong evolutionary advantage. Beings with curiosity will expand their original niches and gradually occupy any existing habitat.


    Given all that, I think the lack of ETs on Earth is due to one of two possible causes: either the probability of life arising is very low, or there is an "interdict law" among space-faring races, that protect from contact planets with primitive life forms that may eventually develop intelligence.

    1. Re:Very strange, how unlikely by rm999 · · Score: 1

      "For instance, how about the rather improbable asteroid collision that scientists believe killed the dinosaurs. If it had not happened, Earth could have had intelligent life 50 million years ago."

      Or maybe it never would have happened. Mammals only dominated because the dinosaurs died. Mass extinctions are good for ecological diversity because they are almost always followed by an explosion in new types of species.

      "Given all that, I think the lack of ETs on Earth is due to one of two possible causes: either the probability of life arising is very low, or there is an "interdict law" among space-faring races, that protect from contact planets with primitive life forms that may eventually develop intelligence."

      Or it could be the fact that they are millions of light years away, and therefore effectively will never have a chance of reaching or finding us.

    2. Re:Very strange, how unlikely by berzerke · · Score: 1

      ...the dinosaurs apparently existed for hundreds of millions of years without developing any form of superior intelligence...

      I've often wondered if this is true, or not. Maybe they did develop intelligence, but after many million of years, and a few global calamities, the signs just aren't there anymore, or we don't recognize the signs, or we haven't found the few signs that yet remain (new species of dinosaur are still being discovered after all). How much human civilization would be still exist, let alone be recognizable, to a *TOTALLY* alien culture just a few million years after we went extinct?

      Perhaps the some of the dinos did develop intelligence, but never got very far along the tool making process? Chimps and even at least one species of bird make tools, but the are just simple pieces of wood (used for getting insects out of hard to reach places) that probably wouldn't have been preserved or recognized if they were preserved. How long were humans, with our superior intelligence, on the world before we advanced beyond stone tools?

      Admittedly, I've seen absolutely no evidence (YET!) that dinos did develop intelligence, but it is something to think about.

    3. Re:Very strange, how unlikely by Anonymous Coward · · Score: 0
      Taking into account all the parameters in Drake's equation [wikipedia.org], we have very many stars in our galaxy, and we are finding that many of them have planets. We still don't know how many of those can develop life, but it's obvious that some of the other parameters must have very low values, or we would have found many extra-terrestrial civilizations by now.

      I think one of the most overlooked parameters in the drake equation is the average length a civillization lasts. What if there were lots a long time ago?

      We've been around as a species for something like 75,000 years out of the universe's (about 0.0005%) estimated 13.7 billion year existence. We've had radio for about 90 years. Even with the best of our technology, I think our chances of sorting out even an intentional radio signal from an equivalent civilization drop significantly beyond a few light years, meaning an civillization very much like ours could exist within our local group and we might not even know it.

      Suppose our civillization is average and could expect another 75,000 years of existance, but for this portion with the ability to communicate electromagnetically. That means we can search 0.0005% of the universe's current time span, and if a million stars are within range of our antennae, we can search approximately 0.000000000000001% of the universes solar systems (it's been estimated there should be 10^20-10^22 stars in the universe). It makes our chances sound really small unless there are a lot of other people out there.

      Given all that, I think the lack of ETs on Earth is due to one of two possible causes: either the probability of life arising is very low, or there is an "interdict law" among space-faring races, that protect from contact planets with primitive life forms that may eventually develop intelligence.

      Assuming space-fairing is possible in the first place. Just because warp drives and worm holes work on Star Trek doesn't mean they do in real life. I sure hope so, because it would suck for all this universe to exist around us and not be able to explore it.

    4. Re:Very strange, how unlikely by Jerf · · Score: 1

      Resource consumption. To have a technological civilization, you will consume resources. Resources which are still there; many mineral resources we've exploited are older than the dinosaurs. Therefore, nobody has beaten us to them.

      Is it impossible that an intelligent civilization preceded us? Not entirely. But "they didn't use the resource because they had a pure-biological technology" is pretty unlikely (and might well also manifest itself in obvious ways in the genetic record) by very simple economic arguments (the same that explain why we are exploiting those resources), and "they replaced them for us" also involves some pretty unlikely assumptions.

      About the only one that works, IMHO, is to believe the "ascension" scenario, that the reason why we don't see a lot of life in the universe is that intelligent live inevitably evolves to some sort of transcendent state that we still have no idea what it might be, and that such life might care enough to leave behind machines to harness centuries/millenia of solar power and careful set the planet back to the "original" state before destroying themselves with no trace. The latter part is theoretically possible, but the former is a pretty big assumption right now. On the one hand, it seems unlikely. On the other hand, right now all of the answers to the Fermi Paradox seem pretty unlikely, and at least one of them is true.

      I know it's popular to say we'd never know, but I think we would know. We wouldn't have any artifacts, but there is other evidence of our existence that will survive millions or billions of years.

      (On a similar note, I like to say this is Mother Earth's one crack at a fast-moving technological civilization, expanded on at that link. If we die, it will be immensely harder for anything to ever reach the levels we've reached, because we've taken all of the easy resources, and there's a time limit for resources to be re-created before the sun renders the planet uninhabitable. You might have time to have fresh oil reserves, but there's not much time for fresh mineral reserves.)

    5. Re:Very strange, how unlikely by mangu · · Score: 1
      Or it could be the fact that they are millions of light years away


      Yes, that too. Certainly a much more likely cause than the "interdict theory", because if it takes thousands of years to reach a planet, law enforcement will not be a likely deterrent...


      Still, it's a bit depressing to think that simple physics limitations will keep us bound to our planet forever. I prefer to think that, given a sufficiently advanced technology, speed of light will not limit us. Get close enough to light speed and any trip will take zero time for the traveler.


      Even acceleration needs not be such a big limitation for us. There was a story in 1980 in Analog magazine by Charles Sheffield, "Moment of Inertia" with an idea for a starship that could reach high accelerations. It had a big disk of very dense matter, which had a surface gravitational acceleration of, let's say, 50 g. If the ship's cabin was near that disk, the whole system could be accelerated at 51 g with only one g felt in the cabin.


      I prefer to think that the probability of evolving intelligent life is extremely small and we are the first intelligent species to ever evolve in our galaxy.

    6. Re:Very strange, how unlikely by paralaxcreations · · Score: 1
      Or it could be the fact that they are millions of light years away, and therefore effectively will never have a chance of reaching or finding us.
      Surely you jest!
    7. Re:Very strange, how unlikely by rapidweather · · Score: 1
      When I saw the movie Jurassic Park all I could say was, "man would not have wanted to be on the planet at the same time as those creatures".

      Some of them had evolved into almost perfect killing machines.

      Very scary, and a classic (no pun intended) to be sure.

    8. Re:Very strange, how unlikely by mangu · · Score: 1
      Just because warp drives and worm holes work on Star Trek doesn't mean they do in real life. I sure hope so, because it would suck for all this universe to exist around us and not be able to explore it.


      That's exactly how I feel. But, as I mentioned in another post above, there is at least one way to travel to remote places in a short subjective time that does not violate our current knowledge of physics.


      One should never forget how the Pony Express was created more than twenty years after the telegraph had been invented. It's amazing to think that someone invested in a system that took two weeks to get a message from San Francisco to New York when it could be done almost instantaneously.


      I think it's almost certain that in the next hundred years we will be able to make good working copies of our brains and minds. Then it will be a simple matter to put one such copy in a starship and send it to a distant planet. It doesn't matter how long the travel will take, since the brain will be deactivated during the trip. When the copy comes back, it will be fused to my mind and I will have complete memories of the remote place, just as if I had done it physically.


      It took fifty years from heavier-than-air flying machines being impossible to supersonic flight. I don't think interstellar flight is far away.

    9. Re:Very strange, how unlikely by Jeremi · · Score: 1
      Given all that, I think the lack of ETs on Earth is due to one of two possible causes: either the probability of life arising is very low, or there is an "interdict law" among space-faring races, that protect from contact planets with primitive life forms that may eventually develop intelligence.


      There's an easier explanation: space is big. Really, really big. You have no idea how mind-bogglingly vast interstellar distances are. As Adams says, it simply doesn't fit in the human imagination. Perhaps even the most technologically advanced space aliens simply can't afford the time and effort to cruise around goggling at every two-bit civilization in the galaxy. :^) (and that's assuming they even know we're here... we've only been sending out radio signals for a few decades, they've hardly had time to propogate anywhere). Or perhaps, they simply don't care... they're more interested in their own affairs.

      --


      I don't care if it's 90,000 hectares. That lake was not my doing.
    10. Re:Very strange, how unlikely by Jeremi · · Score: 1
      Get close enough to light speed and any trip will take zero time for the traveler.

      ... but plenty of time for the people at the destination. So perhaps an alien hopped into his spaceship this morning, he's going to pop over to Earth before lunch time (according to his watch)... but as far as we're concerned, he won't be here for another 50,000 years. :^(

      --


      I don't care if it's 90,000 hectares. That lake was not my doing.
    11. Re:Very strange, how unlikely by nizo · · Score: 1

      Right; it is like an antpile wondering why humans on the other side of the earth haven't visited yet.

    12. Re:Very strange, how unlikely by mark_osmd · · Score: 1

      >If we die, it will be immensely harder for anything to ever reach the levels >we've reached, because we've taken all of the easy >resources, and there's a >time limit for resources to be re-created before the sun renders the planet >uninhabitable. You might have >time to have fresh oil reserves, but there's >not much time for fresh mineral reserves.) Why? All the mineral reserves we've used are still here on the earth, the only metal we've mined that isn't here are the few tons sent as probes or rockets to outer space. The next advanced civilization could mine our junk yards, dumps, and cities. Some of the junk metal get rusted away and dissolved in the ocean (old ships) so I'd admit that's hard to get at.

    13. Re:Very strange, how unlikely by Jerf · · Score: 1
      Why...?
      Entropy.
    14. Re:Very strange, how unlikely by Anonymous Coward · · Score: 0

      Stating there's a lack of ETs is rather a broad and inaccurate statement. All sorts of people have seen flying craft that quite readily was "not of this world". I know I certainly did, but given this is slashdot I'll pass on the dissin comments. Look at our earlier stealth designs we have now, now imagine what our tech will be capable of in just 100 years from now. That's why "sightings' are so fast, fleeting, odd and why any pics might be fuzzy, the nature of their drive systems (can't tell you what it is, just what it isn't-normal jets or rockets, etc) and ability to go into and out of some sort of stealth mode. Since my sighting (awesome, simply just amazing and I'll never forget it, ever, I was quite close and got to see a disk for about a minute even), and an interest I then naturally got in the subject, I've had higher ranking military people brief me on this way off the record and after they were retired...it's real,man. Real. We aren't alone. The main basis for the continuuing coverup (as it was told to me) is because they are so unsure of what it would do to society, right off the bat our military doesn't even come close to being able to "control" their movements. All kinds of problems might happen if they just blurted it out, plus they would have to explain why all the lies for years, people would question them on other stuff, etc, a lot of various religious folk would have screaming freakout fits over it, and etc. problems. They are sometimes able to see them on radar, sometimes they can't, similar to our stealth tech, just way more advanced than what we have. They guys who watch space electronically see them regularly on their scopes, the one guy who clued me in, that was his job, overseeing some of that, and no I will not say where, I promised. Another guy was part of a team that had to clean up what was left over of one of our fighters after it tangled with one-he lost. That's probably another reason why they keep it quiet, maybe some of them are all not all that friendly, or we aren't to them or something. I can only guess there, but there have been "incidents", or so I was told.

      And that's about all I know on the subject, and about all they know as well. There's various aliens come here and flit around and leave and do stuff, but it is still their call on it. I am just guessing but maybe they have some sort of "prime directive", or maybe they do fool around with humans some, and can cover what they do-I really don't have an opinion on that one way or the other, nor am I claiming I ever saw an actual ET, just the single craft-which was way beyond anything I have ever heard about that humans can do technologically. I mean, I saw that thing move. Real slow, hover, completely silent, then take off, then just poof away. I mean mach ludicrous speed gone. Now I have seen rocket/satellite launches, high speed fighter jets etc..this thing..naw..we don't have anything like it, not even close. It wasn't some weather anomaly or ball lightning or a candle in a plastic bag or the planet venus, it was around a 30 foot wide classic hollywood disk looking thing-probably where the stereotype came from, it's what people have seen. People have also seen cigar shaped, and very large triangles, but those might be normal black ops planes. I don't know on that either. The disks though-quite real.

      I actually am quite pleased knowing we aren't alone in the universe! Even if that craft was remote controlled it still means there's some ...uhh, people, maybe not like us.. elsewhere running it!

    15. Re:Very strange, how unlikely by berzerke · · Score: 1

      ...Resource consumption. To have a technological civilization, you will consume resources...

      I never said anything about an advanced technological civilization, merely that they could have evolved intelligence. How much resource consumption does a stone age civilization really use compared to our more advanced civilization? Maybe they stopped at rocks and slings and clubs. None of those tools require much resource consumption. Many primative societies used tools made from animal bodies and plants. Again, not much resource consumption there, but that doesn't mean they aren't intelligent.

      ...many mineral resources we've exploited are older than the dinosaurs. Therefore, nobody has beaten us to them...

      Don't forget that the surface of the Earth has changed significantly over the millions of years since the dinos died out. What was once ocean is now mountain, etc. Resources that are easily exploitable today may not have been so millions of years ago (and vice versa) which could explain why they were not exploited.

      ...But "they didn't use the resource because they had a pure-biological technology" is pretty unlikely...

      It's also possible (admittedly unlikely, but possible) that *some* of the non-destructive resource deposits (i.e. metals; they aren't destroyed by use, but merely redistributed) we harvest today are leftovers from the dinos, either dumps or the remnents of settlements. So there's no reason to think that just because there are still resources around that nobody came before us.

      Again, there is no evidence that the dinos did develop intelligence (so far), but it is a possibility. If we close our minds to that possibility, we may never recognize the evidence if it does surface.

    16. Re:Very strange, how unlikely by Omestes · · Score: 1

      Same could be said, to a more limited and smaller extent, of cats, sharks, and humans (apes, limited). Life is smaller, but not qualitivly different.

      --
      A patriot must always be ready to defend his country against his government. -edward abbey
    17. Re:Very strange, how unlikely by Mistshadow2k4 · · Score: 1
      or there is an "interdict law" among space-faring races, that protect from contact planets with primitive life forms that may eventually develop intelligence.

      That assumes many things which shouldn't be assumed. Just because FTL travel exists in almost every modern SF show doesn't mean that it's possible. Sapient life could actually be common but we wouldn't know about it if very few, if any, species make it no farther than their own solar system. And then there's the War of the Worlds syndrome, which all too few /.ers seem to take seriously: the problem of alien bacteria. Native bacteria would likely be quite deadly to aliens. How could they possibly immunize themselves against everything? With that in mind, it might be safer to stick to lifeless planets to get your resources from. Just visiting out of curiosity? That assumes a lot too, like that some aliens would care. Perhaps some wouldn't give a crap about humanity, labeling us Species 8472 on Rock3. Even if they did, and they had the technology to get here, they could probably study us all they want from a safe distance (safe from us and our bacteria) without us ever knowing.

      --
      I dream of a better world... one in which chickens can cross roads without their motives being questioned.
    18. Re:Very strange, how unlikely by FinestLittleSpace · · Score: 1

      I don't think this is the case, according to our current knowledge of space/time.

      Isn't it more the case that if they were to TELL us they were coming over to earth via radiowaves, he 'wouldn't be here for 50,000 years', but given that he can get to earth in, say, 5 minutes, why would he send a radio message in the first place, given that he'd beat it? It would APPEAR to the alien that they were on earth '50,000 years on' if they checked a telescope before they travelled, and compared the visual outcome when they arrived, but actually in real time, he would arrive 5 minutes later by both of their watches.

    19. Re:Very strange, how unlikely by Jeremi · · Score: 1
      I don't think this is the case, according to our current knowledge of space/time.


      I'm afraid it is the case. Check out the Twins Paradox for details.


      but given that he can get to earth in, say, 5 minutes


      It would be 5 minutes according to the travelling alien's wriswatch, 50,000 years according to anyone observing the spaceship from the outside. (I'm presuming his spaceship can only go near-lightspeed, not faster than light... if that is possible, then all bets are off :^))

      --


      I don't care if it's 90,000 hectares. That lake was not my doing.
  33. Re:Who says inhabitable is really inhabitable? by geekoid · · Score: 1

    Jeez man, what do you have against Donny?

    you sicko.

    --
    The Kruger Dunning explains most post on /. http://en.wikipedia.org/wiki/Dunning%E2%80%93Kruger_effect
  34. A better version by mangu · · Score: 1

    When talking to some girls, I have an urge to exclaim "Uranus is HOT!!!"

  35. Of course Hot Jupiters have Hot Earths. by Rob+T+Firefly · · Score: 1

    If there were no hot Earths, where would the hot Jupiters get their hot starbabies from?

    1. Re:Of course Hot Jupiters have Hot Earths. by Anonymous Coward · · Score: 0

      "Hot starbabies"?!? Go back to renchan you sick pedo.
      .

  36. It's a world gone mad by wwillia99 · · Score: 1

    It sounds like Paris Hilton is naming planets now. I think the conversation went something like this.

    Paris "That Jupiter is totally hot."
    Nicole "Yea and the Earth it created is too."
    Paris "Yea like, totally."
    Nicole "Oh my God, I want to make out with it."
    Paris "Yea, that would be totally hot."

  37. Re:Who says inhabitable is really inhabitable? by Drooling+Iguana · · Score: 1

    How the hell did an organism that had never been exposed to anything remotely like terrestrial life adapt to use a human as a host within a few seconds?

    --
    ... I'm addicted to placebos
  38. Gah! Mod parent up by Anonymous Coward · · Score: 0

    Dang it. I just wasted my last mod point on some guy 2-3 posts up. That's pretty darn funny.

    Actually, I rolled my eyes and almost stopped reading when I saw "I've been studying extrasolar planets for exactly 40 years." I'm not necessarily the brightest flashing light on the tricorder...

  39. 200 billion Earths by bussdriver · · Score: 1

    Stat wise you can claim that there is ONE Earth with life that is intelligent -per galaxy (using us as the only positive sample for this galaxy.)

    If you agree with that premise, then there is an estimated 200 billion galaxies in the observable universe; therefore, we can estimate there is 200 billion places similar to Earth.

    1. Re:200 billion Earths by Anonymous Coward · · Score: 0

      Stat wise you can claim that there is ONE Earth with life that is intelligent -per galaxy (using us as the only positive sample for this galaxy.)

      Why use a galaxy for the sample size?

      Using the same reasoning, you could just as easily say that there is "one Earth with life that is intelligent" per galaxy cluster.

      Or you could even say that we only know that there's at least one Earth with intelligent life per universe.

      Really, the only star system that we know about in great detail is our own solar system. Without knowing more, it's very difficult to say how common or rare such a system is in a galaxy. Maybe it's incredibly rare, and only 0.0001% of galaxies have such a star system. Or maybe the average galaxy has a millions of stars with planets like Earth. There's no way of knowing just by looking at home. To make any kind of estimate, we need to look elsewhere, whether by observation or by simulation.

  40. It would be easier to tell... by jd · · Score: 1

    ...if they released the software they were doing the simulations with under an Open Source license.

    --
    It's a small world and it smells funny; I'd buy another if it wasn't for the money; Take back what I paid (SoM)
    1. Re:It would be easier to tell... by w33t · · Score: 1

      That's an interesting point.

      Considering that most astronomy and astrophysics is publicly funded, including the software development, one would think this software would be publicly available.

    2. Re:It would be easier to tell... by FinestLittleSpace · · Score: 1

      The police in the UK is publically funded but I can't remember the last time they sent me a free MP5 in the post...

    3. Re:It would be easier to tell... by jd · · Score: 1

      I'm sure they'd send you a free MP if you offered the correct masonic handshake.

      --
      It's a small world and it smells funny; I'd buy another if it wasn't for the money; Take back what I paid (SoM)
  41. Re:Who says inhabitable is really inhabitable? by Wave_Rider_1899 · · Score: 1

    Hey there "Drooling Iguana" Well I would disagree. Take for example, the fact that the first drugs used by humans were mostly plants that contained chemical compounds that just so happened to "accidentally" fit into human cell receptors, and caused interesting reactions in the human body. These plants did not evolve to purposely intoxicate humans, or relieve pain, and alot of these plants never encountered a human or primate in the course of their evolution. Poppies evolved to look pretty and thereby get themselves pollinated... not to be ingested as opium! In this very same way, some chemicals and compounds in an alien biosystem could (and probably will) fit into human cell receptors, and do some funky things to the human body. Some of these compounds could even be in the form of self-replicating nano-sized particles. (Afterall our biosphere naturally produces nano-sized particles that function within cells). So I don't buy the argument that many scientists espouse: "Don't worry about brining alien life back to Earth. It can't hurt us. It didn't evolve to infect us." Famous last words. Alien life, if it exists, is just that: alien, unknown, and mysterious. No one can say for sure what its effects will be on humans and our biosphere. - Wave_Rider_1899

  42. Clones! by lorg · · Score: 1

    'We now think there is a new class of ocean-covered--and possibly habitable--planets in solar systems unlike our own,'

    Well ofcause there are ocean covered planets in the solar system, after all where else would the Empire build their clone armies!?!

  43. Hot earths AND ocean-bearing planets by Anonymous Coward · · Score: 1, Interesting

    It's not very clear in the article, but I think the original intent of the investigators was to relay that ocean bearing planets AND "hot earths" are likely to form in a system with a hot Jupiter. There's a buried 'also' implication in the article, and the illustration demonstrates the three kinds of planets. I think this is more a case of poor writing than a misrepresentative headline.

  44. Re:Who says inhabitable is really inhabitable? by Drooling+Iguana · · Score: 1

    There's a big difference between a chemical compound that has certain effects on humans and a parasitic mold that uses human bodies as a host, as in the GGP.

    --
    ... I'm addicted to placebos
  45. crop circles by seventhc · · Score: 0

    Of course there are other habitable planets...just look at all the crop circles. print 'hello world' hello world

    --
    'sig' deleted due to the stupidity of it's 'nature'
  46. what is intelligent life? recursion by drwho · · Score: 1

    It is encouraging that there may be "earth like" planets out there. But not so much as for us to find alien life as it is for us to have new planets to colonize. I say this because there are many possible configurations which can lead to intelligence. But let's top for a moment and figure out what defines the intelligence that we seek: well, it's difficult to figure out. Cats and dogs seem to have something, but also something missing. Well, that missing part is recursion in the thought process. It is what allows us to manipulate abstract concepts and to have our complex language. I really lack the time and space to go into the whole theory here, but you can look up what Prof. Marc Hauser of Harvard has to say on the topic.

    Back to aliens: what is needed is a system which lends itself towards complex and changing conditions, such as an an environment with a temperature range which supports frequent phase changes of a major compent material (like water here on earth), some method of distributing materials around (volcanoes, rain, tides). There are going to be plenty of places like this in the universe, but what we eventually find to be intelligent life may not even appear to us as a life form at first, because it will be vastly different than anything we have likely experienced. except, well....

    Viruses. It could be that the genetic system we now know of has orginiated elsewhere and adapted on this planet. This is the theory of Panspermia, which has a lot going for it. But even if panspermia exists, it is likely that the vast majority of intelligent life that we find in the universe will not be made of it.

    1. Re:what is intelligent life? recursion by Oligonicella · · Score: 1

      "Well, that missing part is recursion in the thought process."

      Dogshit. Dogs in particular, pick up the human languages with ease. Not to an adult's level, but certainly to the level of some of the lower members of /. They can and do plan for the future in the sense of hiding their favorite toy or chew from other dogs and they understand complex commands.

      The problem with most animal 'psychologists' is they cannot seem to understand that there is no motivation for the animal to behave in the way the researcher thinks they should. I've had one researcher complain to me that animals do not think because they are not epistemological. Well, duh.

      Just because said researcher cannot get the animal to cooperate in demonstrating 'recursive' thought, doesn't mean they don't have it. It merely means the researcher cannot....

      "This is the theory of Panspermia, which has a lot going for it."

      Scientifically, it's no theory. And, there's nothing going for it but abstract conversation at the moment. No emperical evidence.

  47. So "Pitch Black" was a decent artistic stretch? by smchris · · Score: 1

    Sort of -- a gas giant transit might be impressive if not actually an eclipse?

  48. how? by Anonymous Coward · · Score: 0

    How could a planet that consists of water, especially with a high temperature, end up dry? This doesn't make sense. There's nowhere for the water to go. Even if the water was evaporated, there would still be water.

    I wonder what the co-auther meant by his statement about dryness.

    1. Re:how? by fluffy666 · · Score: 1

      Simply, UV-splitting of water in the atmosphere to hydroven and oxygen; the hydrogen is then lost to spave by diffusion. See Venus for an example..

  49. Hot Jupiter? by Anonymous Coward · · Score: 0

    Is a hot Jupiter anything like a Hot Lunch?? If so then ewww.

  50. Re:Who says inhabitable is really inhabitable? by Anonymous Coward · · Score: 0

    There's also a big difference between a person who reads science fiction and the asshole who sits off to the side saying "that's all bullshit." You can unclench the asshole once in a while, it's alright.

  51. More Lagrange by Harmonious+Botch · · Score: 1

    Also, for L4 and L5 to be stable, the Jupiter-like planet has to be about 25 times less massive than the sun, or smaller ( 24.7 ? I forget the exact number. ) As the sun gets small enough for L4 and L5 to be cool enough, the ratio drops below the crucial figure, and even L4 and L5 are not stable.

  52. Re:Who says inhabitable is really inhabitable? by Jeremi · · Score: 2, Interesting
    There's a big difference between a chemical compound that has certain effects on humans and a parasitic mold that uses human bodies as a host, as in the GGP.


    It works just as well the other way, too: Why is it that healthy people don't get digested and putrefied by bacteria, when corpses will be broken down in a few weeks or months? Because the human immune system has been refined over a long period to recognize and fight the particular organisms that continuously try to invade and digest our bodies. So why would you expect our immune system to know how to fight off a completely alien lifeform that it's never experienced anything like before? Hell, lots of people get sick just flying to another continent, let alone another ecosystem.


    Keep in mind that in the eat-or-be-eaten scenario, the eater need only know how to digest and make use of the opponent's raw materials. The eatee has to know how to disable or kill the attacker, a much more difficult problem. Without our immune system, we're equivalent to 150-pound bags of rich growth medium...

    --


    I don't care if it's 90,000 hectares. That lake was not my doing.
  53. The opposite is also true by jgoemat · · Score: 1
    Keep in mind that in the eat-or-be-eaten scenario, the eater need only know how to digest and make use of the opponent's raw materials. The eatee has to know how to disable or kill the attacker, a much more difficult problem. Without our immune system, we're equivalent to 150-pound bags of rich growth medium...
    The bacteria you talk about have also spent billions of years evolving here on earth, to attack the life forms that evolved with them. Our immune system is also able to fight off attackers that it hasn't specifically evolved to attack. The passive immune system actually keeps us pretty safe. Scavengers and insects play a large role in decomposition, as does a person's own body when the cells self-destruct when they die. I'm not saying there couldn't be an organism on another planet that could take us, but it is far from certainly.
    1. Re:The opposite is also true by Wave_Rider_1899 · · Score: 1

      Hey folks, That is true, that there is a big difference between a parasitic-alien-mold, and a chemical that just so happens to fit into cellular receptors, and have an effect upon humans. And I do see your point here: the character in this story (Donny) appears to be the perfect "food-source" for the alien-mold to expand and take over. And I would agree that it is unlikely that any form of alien-life would find humans to be very appetizing, and our particular protein patterns would probably be poison to alien life. Even if they did find us to be a "tasty" treat, they would probably keal over with food-poisoning if they ate us (or at least indigestion). But "Probably"... "unlikely"... again, who knows. Life on Earth is mysterious enough. Alien life will be even more mysterious. For example, I have seen Earth-mold growing very happily on plastic, inside airtight sealed tupperware containers, that I could have sworn were perfectly sterile and clean when I sealed them. It was a fuzzy, nasty, and alien-like mold (with an unearthly bluish tint!) Mold also grows rather quickly on my shower-floor consuming soap-scum as a food source (even though I sterlize the shower-floor once a week with a deadly combination of bleach and comet.) That mold seems to eat anything.. I really don't know how it reproduces copies of itself on a diet of soap-scum, but it manages just fine. The Russians had a very nasty problem on their space-station Mir with a particular mold strain that had quickly evolved to consume the materials of the space station. Mold did not evolve to consume plastic, nor soap-scum, nor space-station materials. But it eats these substances happily, and uses it to fuel copies of itself. So who knows what an alien-analog of mold might be capable of doing to a human body like poor Donny. Also: good point by Jeremi about how it is more complex and difficult to be the "defender" as opposed to the "eater". - Wave_Rider_1899

  54. Can we start to solve the Drake equation then? by bunbuntheminilop · · Score: 1

    With 'simulations' and actual data from solar systems, does this mean we will be able to start solving the Drake equation?

  55. Won't be planets according to the IAU definition by chongo · · Score: 1
    ''... solar systems which contain planets like a 'Hot Jupiter' have a higher chance of also containing Earth-like planets.''

    According to the new IAU definition of a Planet, an Earth-like planet must orbit our Sun. Due the IAU's poor definition of a planet (one that restricts the term to only objects that orbit our Sun) one cannot even refer to Earth-like planets around other stars because they cannot fit the IAU's new definition.

    I wish this was a troll post, but it is not. It is am example of the problems with the recent IAU resolution. It is the reason why I joined a number of astronomers and signed the Petition Protesting the IAU Planet Definition.

    Finally, to improve the on topic-ness of this post, permit me to add this note about the significance of idea, if it turns out to have merit:

    Over the past 10 to 15 years, many astronomers assumed that one needed a Jupiter-like object in a stable near-circular orbit, preferably beyond a "life forming zone", before Earth-like objects could stay in the "life forming zone" long enough to form life. This new idea suggests that such Earth-like objects can arise where there are Jupiter-like objects orbiting very close to a star. If their idea is correct, then this means that a number of the stars with known "things-formerly-known-as-extra-solar-planets" containing a Hot Jupiter may also contain a stable Earth-like object in a "life forming zone".
    --
    chongo (was here) /\oo/\
  56. Re:Won't be planets according to the IAU definitio by SirBruce · · Score: 1

    It's an Earth-like planet-like body orbiting a Sun-like object.

    Bruce

  57. Pedantic Philosophy Talk by Omestes · · Score: 1

    But how do we define intelligence in a non-speciescentric way? Our current definition of intelligence hinges on compairing other examples to ourself. Dolphins are intelligent (by human standard), wherease blue-green algea isn't (by human standards). But both could be defined as intelligent in that they occupy their niche sucessfully, and display the amount of adaptability needed to thrive in said niche. Less sucessful than us, perhaps, but we're generalists.

    See the general problem behind defining extra-human intelligence?

    --
    A patriot must always be ready to defend his country against his government. -edward abbey
  58. Hot Jupiters May not Preclude Hospitable Planets by Anonymous Coward · · Score: 0

    What an inaccurate headline and summary.

    It should read something like:

    ...other solar systems which contain planets like a 'Hot Jupiter' have a higher chance of also containing Earth-like planets than originally thought...

    It was originally thought that Hot Jupiters would prevent the formation of earth-like planets, now it appears that they may be able to form anyway, at least some some of the time. The article doesn't say that having Hot Jupiters improves the chances of earth-like planets forming vis-a-vis not have Hot Jupiters. Also, of course, the bit about Hot Earths has nothing to do with the headline.

    --
    harvey

  59. How about.. by accessdeniednsp · · Score: 1

    ..hot grits in Natalie Portman's pants? Isn't that hospitable?

  60. Re:Won't be planets according to the IAU definitio by clean_stoner · · Score: 1
    According to the new IAU definition of a Planet, an Earth-like planet must orbit our Sun.

    Read the definition (PDF warning) more closely. That definition of planets only applied to objects within our Solar System. Bodies in other Solar Systems have no definitions. Not that that isn't a problem in itself, but since they have no definitions we can call them whatever we want. I will hereby refer to these objects as Earth-like starorbliographs.

    --

    Sigs are for the weak.

  61. While we're on the subject... by gd23ka · · Score: 1

    We didn't even begin to explore what meeting intelligent life could be like...

    "You know, they look remarkably like big teddy bears, but they're dressed up in armor
    and they carry machine guns. I've seen them attack. When you put them down you have to
    make sure they're done for. Aim for their heads and blow out their brains, anything
    less than that and chances are they'll hose you down before they go back to Teddyhell
    or wherever they came from. Fucken freaking bears on steroids, I heard they rip off
    people's heads and play sick games with them. Heard they captured some Teddies and
    found a way to talk to them, one of them called us "weird furless freaks" and that
    they're going to make us sorry for coming here.

    Personally, but don't you dare tell anyone this but I can't really hold it against them.
    We've been dropping bombs on their cities the day we got here and one of those places
    was a 250 square mile Manhattan. No wonder they're ... ... upset with us.