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The Mystery of the Missing Methane

Hugh Pickens writes "Astrobiology Magazine reports that NASA's Spitzer Space Telescope has discovered something odd about GJ 436b, a planet about the size of Neptune located 33 light-years away, circling the star Gliese 436. The mystery? GJ 436b lacks methane, an ingredient common to many of the planets in our solar system. Methane is present on our life-bearing planet, manufactured primarily by microbes living in cows, and all of the giant planets in our solar system have methane too, despite their lack of cows. Spitzer was able to detect the faint glow of GJ 436b by watching it slip behind its star, an event called a secondary eclipse. As the planet disappears, the total light observed from the star system drops, and the diference is then measured to find the brightness of the planet at various wavelengths. Eventually, a larger space telescope could use the same kind of technique to search smaller, Earth-like worlds for methane and other chemical signs of life, such as water, oxygen and carbon dioxide. Adam Showman, a planetary scientist at the University of Arizona, says the 'provocative result' raises questions about the evolution of this planet, as well as the possibility that its atmosphere might represent an entirely new class of atmospheres that has never been explored."

10 of 98 comments (clear)

  1. "lack of cows"? by countertrolling · · Score: 3, Funny

    We don't know that for sure. We haven't been to the surface of any of these planets. I believe more study is needed.

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    For justice, we must go to Don Corleone
    1. Re:"lack of cows"? by Scarletdown · · Score: 4, Funny

      The reason that planet is lacking methane is because that solar system lacks Uranus.

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      This space unintentionally left blank.
  2. I Suspect Shinanigans by MaroonMotor · · Score: 2, Funny
    Adam Showman, a planetary scientist at the University of Arizona, says the 'provocative result' raises questions about the evolution of this planet...

    .
    Adam Showman talking about a provocative result eh? Who is surprised? I mean what else could you expect from the father of all show men?

  3. Re:Why So Much Focus on Cows? by Anonymous Coward · · Score: 1, Funny

    I didn't know that one of myth's meanings is nougat. Somethin' new every day...

  4. Re:Sign of life? by flyingfsck · · Score: 4, Funny

    Yup, all the available evidence suggests that the planet is populated with a very large number of anti-cows.

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    Excuse me, but please get off my Pennisetum Clandestinum, eh!
  5. It's not a lack of cows by gyrogeerloose · · Score: 2, Funny

    It's a lack of Taco Bell franchises.

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    This ain't rocket surgery.
  6. What happened to the meth? by 3seas · · Score: 3, Funny

    The Aliens took it on their way here. They needed the fuel resource. See Steven Hawkins story about not talking to the aliens when the get here.

    BTW, the earth is leaking Methane as its been discovered that it wasn't cows causing increased methane here.

  7. Re:Sign of life? by brusk · · Score: 2, Funny

    Bull.

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    .sig withheld by request
  8. Re:Why So Much Focus on Cows? by Anonymous Coward · · Score: 0, Funny

    livestock making up only 19% as a source of atmospheric methane.

    Rush Limbaugh accounts for the other 81%

        -1 Political Troll

  9. Re:Why So Much Focus on Cows? by Ztream · · Score: 3, Funny

    People.