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Kepler Confirms Exoplanet Inside Star's Habitable Zone

astroengine writes "Plenty of 'candidate' exoplanets exist, but for the first time, Kepler has confirmed the existence of an exoplanet orbiting its Sun-like star right in the middle of its 'habitable zone.' Kepler-22b is 2.4 times the radius of Earth and orbits its star every 290 days. 'This is a major milestone on the road to finding Earth's twin,' said Douglas Hudgins, Kepler program scientist at NASA Headquarters in Washington. 'Kepler's results continue to demonstrate the importance of NASA's science missions, which aim to answer some of the biggest questions about our place in the universe.'"

15 of 257 comments (clear)

  1. Silly artist's conceptions. by Samantha+Wright · · Score: 5, Funny

    Scientists don't yet know if Kepler-22b has a predominantly rocky, gaseous or liquid composition, but its discovery is a step closer to finding Earth-like planets.

    Sure they do! Just look at the picture right next to the article! Man, who gets paid to Photoshop these spheres in front of bits of nebulae all day? That must be an interesting job.

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    1. Re:Silly artist's conceptions. by fortapocalypse · · Score: 5, Funny

      Artist: "So what should this thing look like?"
      NASA engineer: "It's 600 light-years away. How the @#$% should I know!"
      Artist: "Picking a planet from an old Star Trek episode at random then."
      NASA engineer: "Ok. But no funny stuff. Save the stars, rainbows, and unicorns for your acid trips."
      Artist: "Nebulous clouds in the background- check."

  2. Re:habitable maybe by ColdWetDog · · Score: 5, Funny

    Did you have to Rule 34 the thread already?

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  3. Re:What do we do now? by Samantha+Wright · · Score: 5, Insightful

    Bemoan our lack of FTL transit and paw desperately at the sky, while our sad little mudball continues to shout itself to pieces over meaningless displays of tribalistic self-importance, treats the future as its greatest enemy, and continues to believe that such is the best course of action.

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  4. Habitable Planets by MyLongNickName · · Score: 5, Interesting

    Many of you may already be aware of this, but it is likely that going forward we will find these "goldilocks" planets with more regularity. Kepler luanched in 2009 with first observations in Jan 2010 and discovers planets using the transit method. Basically, a planet blocks part of its home star's light, and sensitive instruments can pick up on this difference in light. Two transits create a pattern to follow up on, the third transit is considered confirmation of the existence of a plant. So almost 3 earth years of observations means finally being able to detect planets with year long orbits (slight error in logic, depending on when you catch the planet in the act...)

    So we are getting to the point where the data should start pouring in on planets more similar to our own. In another 12 months, I would expect to see hundreds if not thousands of planets similar to our own. That is when I think things get interesting. Say we find only 100 "habitable" planets... follow-up observations should give us an idea about the existence or nonexistence of life. Is it common? Is it uncommon? Are we just one of millions of life bearing planets? Are we an outlier? The mind boggles at what we will learn.

    This is an interesting time to be alive :)

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  5. Re:Take that... by NoNonAlphaCharsHere · · Score: 5, Insightful

    Sure, because the science deniers are swayed by evidence.

  6. Re:Take that... by adonoman · · Score: 5, Insightful
    This is a terrible example of science working, if you're trying to portray science as useful. All this is, is a set of data, that according to our current scientific theories shows a very high probability that there exists a planet 600 light years away that stands a good chance of having liquid water.

    When we land there and find that there is indeed such a planet, that's when we say: "Take that oh deniers of the science. It works bitches,"

    If you're trying to show that science works, stick with examples where science has made seemingly outlandish predictions that later turned out to be true. Like the relativistic effects that need to be dealt with for GPS to work. Or go with the daily grind of science that is pumping out useful technologies in the form of airplanes, computers, plastics, and medicine.

  7. Re:600 light years... by tgd · · Score: 5, Insightful

    Agreed. If it's the same density then 2.4x radius would be 14x the mass. I'm trying to picture a planet with intelligent pancake beings.

    Or they'd have a stronger physiology. Or live in the water. Or perhaps a thousand other options we haven't thought of.

  8. Re:Take that... by geoffrobinson · · Score: 5, Insightful

    I seem to have missed all those people out there who think science doesn't work.

    I know people skeptical of man-made global warming. I know of many others that aren't hard-core Darwinists (to various extents; not all Young Earth Creationists).

    I know of absolutely no one who denies all of science as a discipline of knowledge. Definitely as a discipline which claims total knowledge, but not as a valid path of knowledge of the natural world.

    I guess that's a long way around the barn to say "you are arguing with a straw man."

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  9. Re:More info about the star? by Jesse_vd · · Score: 5, Informative

    I'm no expert on this but I've got an awesome app on my iPhone called Exoplanet. It's always got new planets like this one before I even read about them.

    The host star is KIC10593626

    It's mass is 0.97 solar masses
    It's radius is 0.98 solar radii
    It's 587.1ly away
    Stellar Metallicity is 0.000[Fe/H]
    Spectral type is G5
    Magnitude (V) 0.000
    Right ascension is 19h 17m 70s
    Declination is +47* 52' 90"

    Hope that helps you, And please tell me if you think this would be visible through a telescope. There's a dark sky preserve near here with a 20" telescope that I've been meaning to visit

  10. Re:Take that... by c6gunner · · Score: 5, Insightful

    The issue is that those who are "skeptical" of "man-made global warming" (with a few rare exceptions), and those who "aren't hard-core Darwinists" (a euphemism for "intelligent design", I take it?) by necessity have to reject science as a methodology in order to maintain their beliefs. They accept "science" as the name for a field which gets them useful toys, while completely rejecting the way in which it functions.

    Also, the word "Darwinist" is asinine. It's a perfect illustration of the difference between people who take things on faith, and those who try to maintain a scientific approach to life in general. For the former, an idea is necessarily tied to the person who proposed it, and its validity hinges entirely on the character and reputation of that person. For the latter, the individual is irrelevant. Calling someone a "Darwinist" is as absurd as calling them "Newtonist", "Einsteinist", "Maxwellist", or "Saganist". It's a word which has been manufactured by theists for the sole purpose of framing the debate in a way with which they're comfortable; as the weighing of the opinions of prominent figures, rather than an honest, objective analysis of the data.

  11. Re:Take that... by cowboy76Spain · · Score: 5, Funny

    I really hope we find the Earth evil twin. Surely it will be a world swamped by corruption, hunger, war and incompetence.

    Oh wait....

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  12. Re:Take that... by RasputinAXP · · Score: 5, Funny

    And wearing a goatee.

  13. I understand your skepticism by Weaselmancer · · Score: 5, Insightful

    ROFL. Yeah, when we land there. It's ONLY 600 light years after all.

    I get it, I really do. We've only barely been to our own moon. We can't even get to mars. If we said we were going to send a probe you'd have every right to laugh, let alone a manned mission.

    But hear me out first.

    Mankind has only been engaged in industry for a couple of hundred years. And that was enough to get us to the moon. And humanity has no signs of ending anytime soon. What will we be capable of in another thousand years? Ten thousand? A million? Because if we don't do anything stupid we have that time. Our sun has a few billion years left in it.

    It's important to look for extrasolar planets. It is important to see if they can maintain human life.

    Reason being, that's the first step. We won't ever try to leave this solar system if we have no expectations to be able to survive out there. Now we are finding out that there are planets out there that might be able to support us. Now we have a reason to want to try to reach them. Yes, 600 light years is an uncrossable barrier to us. Today. But if you told the Wright brothers that we'd be walking on the moon in 70 years they would have told you you're nuts. They wouldn't have believed it. Another uncrossable barrier. To them. Not to us.

    Finding these planets is exciting. It says that there is a reason to try to go. It kindles a desire to go see them. And given a million years of human progress, the science *will* come. Maybe it won't be as sexy as warp ships. Maybe it'll just be colony ships moving at a fraction of light speed and take a thousand years to get there. But one way or another, we will get there.

    We will most likely visit this planet. Someday.

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    rediculous.
    1. Re:I understand your skepticism by joe_frisch · · Score: 5, Insightful

      "If you told the Wright brothers that we'd be walking on the moon in 70 years they would have told you you're nuts. They wouldn't have believed it."

      But if you told the Apollo astronauts that 40 years later we wouldn't be able to go back to the moon or if you told the Mercury astronauts that 50 years later the US would no longer be able to put a man in orbit, they would also think you were nuts.

      Progress only happens because we do things, not just because time passes.