Why is Jupiter not a fireball/sun?

Discussion in 'Astronomy, Exobiology, & Cosmology' started by Thoreau, May 18, 2010.

  1. Thoreau Valued Senior Member

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    Why doesn't it burn? If we showed up or sent a robot and struck a match, what would happen?
     
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  3. Dywyddyr Penguinaciously duckalicious. Valued Senior Member

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    Presumably you're looking at
    and remembering that hydrogen is highly flammable.
    It is: in an oxygen atmosphere.
    When the entire atmosphere is hydrogen then all it'll do is extinguish the match.

    Remember that THREE things are required for a fire: heat, oxygen and a combustible material.
    A match on Jupiter would only have two of those...
     
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  5. Shadow1 Valued Senior Member

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    .

    then we would have a second sun, and it want be a good idea,

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    maybe, i don't know
     
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  7. cosmictraveler Be kind to yourself always. Valued Senior Member

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    The main reason Jupiter isn't a sun or didn't become a sun is because it just isn't big enough even at its great size. It must weigh so much before a fusion reaction can ever take place and it isn't close.
     
  8. Enmos Valued Senior Member

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    It's not massive enough. But I think it's close though.

    [Edit]
    Apparently it's not close at all. See quote below:
     
  9. Dywyddyr Penguinaciously duckalicious. Valued Senior Member

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    IIRC if Jupiter were ~80 times more massive it would/ could(?) become a star.
     
  10. draqon Banned Banned

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    there is a critical mass a stellar object must achieve before a nuclear fusion can begin. Jupiter has not achieved this mass. Its called Jeans Mass.
     
  11. soullust Registered Senior Member

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    hey there is our future energy supply

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  12. PieAreSquared Woo is resistant to reason Registered Senior Member

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    From what i heard about the woman you run with.. you have a thing for Jeans Mass .. the more Mass in the Jeans the better your odds for fusion
     
  13. draqon Banned Banned

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    does not satisfy my needs thou, but can I change the physics of self to the point that Jeans Mass value is lowered?
     
  14. PieAreSquared Woo is resistant to reason Registered Senior Member

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    a lot depends on your playgrounds
     
  15. Jon X Science Registered Senior Member

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    Jupiter isn't big enough to be a star.
     

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