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New Large Rocky Planet Found

An anonymous reader writes "Discovery News is reporting the discovery of a super-sized rocky planet orbiting a red-dwarf. The star is located about 9000 ly from the sun. The planet consists of rock and ice and orbits at around the distance of asteroid belt. The planet could not grow to Jupiter size because the star is small and the system ran out of gas. The planet is about 13 earth masses and was discovered using the microlensing technique. Since most of the stars in the Milky Way are smaller than the sun, we should expect more of similar findings."

29 of 119 comments (clear)

  1. Bad Joke by wasted · · Score: 4, Funny

    As more of these planets are found using microlensing, perhaps someone could put together the "Rocky Planet Picture Show."

    Sorry, had to do that.

    1. Re:Bad Joke by Anonymous Coward · · Score: 3, Funny
      Sorry, had to do that.

      No, you didn't.

  2. Ok Where are the E.T.s by CastrTroy · · Score: 2, Interesting

    I haven't been following this news too closely, so could someone please tell me if they've found any planets that are the size of earth? not 13 earth masses, but somewhere between 0.5 and 2 earth masses would be nice. I know that life can exist outside of conditions found on the earth, but it would be really cool to find intelligent life like ourselves. I'm not sure what evolution did on other planets, but I'd like to see what kind of muscles developed on organisms that lived on a planet with 13 times the mass of the earth.

    --

    Anthropic principle: We see the universe the way it is because if it were different we would not be here to see it.
    1. Re:Ok Where are the E.T.s by Daniel+Dvorkin · · Score: 3, Informative

      AFAIK, none of the techniques we have right now can detect planets much smaller than the one they just found. The exciting thing is that every time the techniques get better, they immediately start finding bunches of new planets down to whatever the current limit is; which implies to me that once the resolution is fine enough, we'll probably be seeing ~Earth-mass planets all over the place.

      --
      The correlation between ignorance of statistics and using "correlation is not causation" as an argument is close to 1.
    2. Re:Ok Where are the E.T.s by 0racle · · Score: 4, Funny

      intelligent life like ourselves
      One of these things is not like the other.

      --
      "I use a Mac because I'm just better than you are."
    3. Re:Ok Where are the E.T.s by Dmala · · Score: 2, Funny

      ...I'd like to see what kind of muscles developed on organisms that lived on a planet with 13 times the mass of the earth.

      I'm not sure I would. Something tells me we'll have to be really, *really* nice to them.

    4. Re:Ok Where are the E.T.s by Shihar · · Score: 2, Insightful

      Yeah, well, this "pond scum" is going to transcend biologics within the next 100 years and spread its intelligence across the universe. No, global warming is not going to kill us even if the most dire prediction are true. This pond scum has a nasty habit of survival and environmental manipulation.

      If this "pond scum" for some reason doesn't spread itself to the wind to cover every nook and cranny within its little sphere of light, it is only because it doesn't want to or someone else did it first.

      I know knocking humanity is cool and all, but passing off humanities achievements and its potential to reshape the universe in ways that make supernovas look trivial is just silly. Humanity (as far as we can tell) IS something unique. We are the next step in a grand evolution that has taken literally billions of years. Nuclear parts formed atoms, atoms formed molecules, molecules formed complex organic molecules, complex organic molecules formed the beginnings of life, the beginnings of life developed into diverse single celled organism, single celled organisms developed into multi-cellular organism, multi-cellular organisms developed into animals with complex behavior, animals with complex behavior developed into intelligent creatures, intelligent creatures developed technology.

      Ever since the first atoms were formed this 'evolution' has speed along its way developing new paradigm shifts. We tend to forget that the evolution was taking place long before life and that life is just one of the newest attempts towards greater complexity. Technology is just the latest step in this long chain of evolution. What is next? Transcended biotech humans? Strong AI? Who knows? Whatever the case, I would bet my bottom dollar that whatever is next, we are apart of it.

      Pond scum we might be, but I personally think that this pond scum is going to leave a lasting mark on this universe.

      Then again, I could have just been reading too much Kurzweil

    5. Re:Ok Where are the E.T.s by MichaelSmith · · Score: 2, Interesting
      somewhere between 0.5 and 2 earth masses would be nice.

      A planet that big is likely to have many large moons, much like the gas giant planets in our own solar system. The same goes for gas giants found around other stars.

      The nice thing about orbiting a large planet is that you get energy from tidal stress, which can help replace energy you would otherwise get from a star.

    6. Re:Ok Where are the E.T.s by meringuoid · · Score: 2, Funny
      ...I'd like to see what kind of muscles developed on organisms that lived on a planet with 13 times the mass of the earth.

      I'm not sure I would. Something tells me we'll have to be really, *really* nice to them.

      I have a mental image here of guys with ridiculous musculature, big hair, monkey tails, various impressive ki-based techniques, and a very bad attitude. I for one am hoping like hell for the sake of the rest of the galaxy that the place gets, er... hit by a comet, yeah, a comet...

      --
      Real Daleks don't climb stairs - they level the building.
    7. Re:Ok Where are the E.T.s by ultranova · · Score: 2, Interesting

      Muscle just makes hollowpoints expand quicker.

      Stronger gravity makes things fall faster. This means that the beings living there will need faster reflexes to be able to walk, since they have less time to react. 13 times Earths gravity means that the beings will simply sidestep the bullet and watch as it sails past them in virtual slow motion. Assuming that they don't simply stand there and let it pounce of them, since their tissues will also need a much higher tensile strength to resist their local gravity.

      Or they can just go John Carter or Super-Saiyajin on you. Fighting someone from a higher gravity planet is going to hurt.

      --

      Forget magic. Any technology distinguishable from divine power is insufficiently advanced.

    8. Re:Ok Where are the E.T.s by lorelorn · · Score: 2, Informative
      I haven't been following this news too closely, so could someone please tell me if they've found any planets that are the size of earth?

      Unfortunately, no. Microlensing is a technique that allows us to find smaller planets than was previously possible. As planets go, the Earth is big on the rocky scale, but small compared to, say, Jupiter. It's no accident that extrasolar planets so far discovered are measured in terms of their size compared to Jupiter.

      To discover Earth-sized planets required a space-based telescope network. The good news on this is that the Terrestrial Planet Finder has been scoped, planned, costed and is ready to go. The bad news is that this project has been cancelled (the bureau-speak is "indefinitely postponed") so that another man can go plant a flag on the moon.

      We will all have a long wait now to find other Earths.

  3. Re:ya and so.... by Anonymous Coward · · Score: 3, Insightful

    -1: Flamebait

    Come on, everyone knows science is incremental. 99% of progress is unremarkable in and of itself, but quite often the process involved allows greater leaps to occur. For instance, the microlensing they are using in these systems are a good advance in optics -- now what other uses can we think of? And that doesn't even count what we can't even predict.

    Your attitude is just demonstrative of what is wrong with people today, they cannot think past the immediate, and certainly don't understand how we got to where we are today (hint: it's not by only making major breakthroughs).

    Westblogs

  4. Super-sized? by malsdavis · · Score: 3, Funny

    What the hell does a "super-sized rocky planet" mean?

    I really hate the way Discovery channel always takes information and adjusts it purely for their largest target audience - extremely overweight, couch potatoes who dislike going for more than 5 minutes without seeing the words "super-size".

  5. Re:ya and so.... by Anonymous Coward · · Score: 4, Funny

    We have found other planets like this before, this is not news.

    Sure, to YOU it's just a dupe of celestial proportions.

    But some of us are FROM Altair Centauri, and this is the first news item we've had in 9000 years, you insensitive clod.

  6. Re:ya and so.... by rev_g33k_101 · · Score: 3, Interesting

    -1: Flamebait

    Hey, hey, hey, just because somebody has a critical opinion on something dose not make them flamebait!

    Come on, everyone knows science is incremental. 99% of progress is unremarkable in and of itself, but quite often the process involved allows greater leaps to occur. For instance, the microlensing they are using in these systems are a good advance in optics -- now what other uses can we think of? And that doesn't even count what we can't even predict.

    I would agree with you here but, the focus of the story is not the optic technology used in this find; it's the useless planet.

    The tech of the find is thrown in the story like packing peanuts, just filling space, and is overshadowed by the icy-rocky-planet-thingy.

    Your attitude is just demonstrative of what is wrong with people today, they cannot think past the immediate, and certainly don't understand how we got to where we are today (hint: it's not by only making major breakthroughs).

    Nope sorry, didn't miss the interesting optic comments in the story, but this was not billed as a story about how they found the planet.

    Plus I am not only looking for major breakthroughs here, just tired of hearing the same story rehashed every 2 weeks.

    --
    "The problem with defending the purity of the English language is that English is about as pure as a cribhouse whore."
  7. Wrong! Gravity dependent on mass and density by ZombieEngineer · · Score: 4, Insightful

    Go back to your high school physics, g is proportional to the mass and the inverse of the distance squared. Assuming a sphere, mass equals density x 4/3 x pi x R^3. Apply the inverse R^2 term and you end up with g proportional to density x R.

    The planet might be 13 times the mass but if the density is the same as Earth then g is only 2.35 times that of Earth (cube root of 13).

    ZombieEngineer

    1. Re:Wrong! Gravity dependent on mass and density by ZombieEngineer · · Score: 3, Insightful

      OK, so I missed a step in the second line. Assuming constant density then volume is proportional to mass. Therefore R is proportional to the cube root of volume, and therefore R is proportional to cube root of mass. Using the previous derivation that g is proportional to density x R, then g is proportional to density x (mass)^(1/3). Why is this important? This allows for a planet to have a fairly wide variation in mass but still have a "reasonable" gravity. Assuming +/- 20% window for gravity, this would translate to a -48% to +72% of planetary mass.

  8. Re:ya and so.... by SeaDour · · Score: 3, Insightful

    This story is anything but useless, as it expands our understanding of the range of stars that can support a habitable planet. Sure, this world is probably too far from the red dwarf to have life, but the finding proves that red dwarf star systems can have rocky worlds like ours, perhaps even close enough to the star.

    The previous poster was right -- SCIENCE IS INCREMENTAL. We can't shrug off discoveries like these simply because they don't "excite".

  9. Re:ya and so.... by kst · · Score: 3, Insightful

    You know this is why people are loosing interest in the space program! Useless findings after useless findings are boring people to death.

    They found a new planet, 13 times the mass of Earth, and you're bored?

    Sheesh!

  10. Re:When can we travel there? by Coffee+Warlord · · Score: 2, Insightful

    We will achieve faster than light travel (of speeds useful to travelling through space) exactly 5 minutes after I die.

    Approximately 5 minutes later, we will find the cure for whatever I died from.

  11. Fill-er-up! by SeeMyNuts! · · Score: 2, Funny

    "The planet could not grow to Jupiter size because the star is small and the system ran out of gas."

    No problem. They'll just coast another few light years, and it turns out there's a Speedway just past the next pulsar. Add a couple chili dogs from the snack bar, and there'll be enough gas in that system for another 5 million years.

  12. Re:ya and so.... by freeweed · · Score: 2, Funny

    You know this is why people are loosing interest in the space program! Useless findings after useless findings are boring people to death.

    Honestly what impact will this find have on the scientific community?


    No, it's flamebait because you're flaming. "Boring people to death?" Doubtful, considering how much news an event like this generates. There are plenty of people on Slashdot alone talking about this, never mind the thousands of others who don't visit Slashdot.

    Having a difference in opinion, even a critical one, is not what makes your post flamebait.

    The "wow this is teh ghey! stupid boring scientists, who cares" presentation is what makes it flamebait. Honestly, if you don't care about these stories, DON'T READ THEM. Whining that they don't interest you is pretty boring in and of itself.

    --
    Endless arguments over trivial contradictions in books written by ignorant savages to explain thunder in the dark.
  13. Re:Absolutely true... by Bad+D.N.A. · · Score: 2, Insightful

    absolutely true, and it's sad that your post was modded "troll".

    Welcome the "common man"

    So you don't understand the significance of this observation because?

    It is the endless stories like this...

    Perhaps you could reference these "endless stories Seriously, it sounds pretty cool to me. I don't see in any way, shape, or form how this is a "dupe", if that was your conjecture. Or perhaps by "endless" you mean any scientific study that does not result in a star-trek utopia?

    --
    "Truth is much too complicated to allow anything but approximations"
  14. Re:ya and so.... by Bad+D.N.A. · · Score: 3, Funny

    They found a new planet, 13 times the mass of Earth, and you're bored?

    dude. You can't explain the relevance of the study when your audience does not understand the word "relevance"

    --
    "Truth is much too complicated to allow anything but approximations"
  15. Re:ly? by Witchblade · · Score: 2, Informative

    You obviously never graded any of my homework. As an undergrad or graduate student. Or published journal articles. There's no official abbreviation, but it gets abbreviated 90% of the time. Like with seconds (s, sec, or even " seen frequently. Of course the last IS offical when describing divisions of an arc.) 'Lyrs' is also common.

  16. Re:ly? by meringuoid · · Score: 4, Funny
    'Lyrs' is also common.

    I thought that was an abbreviation for 'politicians'. As in 'Tony Blair and George Bush are lyrs.'

    --
    Real Daleks don't climb stairs - they level the building.
  17. The best proof for Extraterrestrial Intelligence: by splutty · · Score: 2, Insightful

    Is the fact they haven't visited us.

    (Sorry. I couldn't resist)

    Splut.

    --
    Coz eternity my friend, is a long *ing time.
  18. More planet stories, plus a news release by Science_Writer · · Score: 4, Interesting

    Hi, everyone. I wrote one of the original news releases about this planet discovery, so I'm very interested in the discussion of whether the "super-Earth" is exciting news or not. When I first found out about the planet (I work at Ohio State University; one of our astronomers heads the team that identified it) I knew I had to write a news release (I mean, this is a new planet!) but I also had to wonder how much of a splash the story would make in the media.

    Some 170 extrasolar planets have been discovered in the last decade, so there's already been a lot of news coverage. But it's easy to forget that before a decade ago, scientists had no real evidence of what other solar systems are like. This planet is unusual in that it's terrestrial, and its solar system doesn't seem to have any giant gas planets like Jupiter. So the find expands our ideas about what kinds of solar systems are out there, and it also suggests that we're getting closer to our goal of finding other Earth-mass planets.

    There's more information in the Ohio State news release, and the one written by my colleagues at the Harvard-Smithsonian Center for Astrophysics. There are also lots of other news stories out there right now, most notably by New Scientist, National Geographic, and Space.com.

    Pam Gorder

  19. catalog of exoplanets by Anonymous Coward · · Score: 2, Informative

    for summary of discovered extrasolar planets (exoplanets) check
        www.exoplanets.org

    (it's not updated as frequently as news sites, but it IS maintained by astronomers, not someone making a quick buck...)