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Thread: Life Beyond Earth

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    BAMAPHIN 22's Avatar
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    Life Beyond Earth

    An ocean on Mars. An Earth-like planet light years away. The evidence is mounting, but are astronomers ready to say we're not alone?

    http://www.netscape.com/viewstory/20...php&frame=true
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    Gone

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    To think we're the only life that exists when we're just one planet in one solar system in one galaxie is ridiculous.

    There's other life out there somewhere. We just haven't found it yet.
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    Sponge

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    Quote Originally Posted by Pagan View Post
    To think we're the only life that exists when we're just one planet in one solar system in one galaxie is ridiculous.

    There's other life out there somewhere. We just haven't found it yet.
    Or they're watching us act like idiots and have decided not to interact with us. :wink:
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    Megatron's Avatar
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    Quote Originally Posted by Sponge View Post
    Or they're watching us act like idiots and have decided not to interact with us. :wink:
    I think it may be light speed travel is an impossibility. That would be a weird one wouldn't it, that there may be life throughout the universe but that life has no way to interact.
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    ABrownLamp's Avatar
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    Quote Originally Posted by Megatron View Post
    I think it may be light speed travel is an impossibility. That would be a weird one wouldn't it, that there may be life throughout the universe but that life has no way to interact.
    Even if light speed travel was possible, the next closest star in this galaxy is 6 light years away. Our galaxy alone, in diameter, is over 100,000 light years across. So really, the only conceivable way to travel would be through wormholes.
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    Sponge

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    Unless of course there are methods of travel we haven't conceived of.
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    Gone

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    Quote Originally Posted by Sponge View Post
    Unless of course there are methods of travel we haven't conceived of.
    Exactly.

    Hard for alot of people to accept, but we may not be the brightest bulbs in the universe's Xmas tree, ya know? :wink:
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    Sponge

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    Quote Originally Posted by Pagan View Post
    Exactly.

    Hard for alot of people to accept, but we may not be the brightest bulbs in the universe's Xmas tree, ya know? :wink:
    I've always had a lot of difficulty with the concept that we are consistently on the leading edge of science.

    At one time, the best scientists in the world believed the earth was flat (not saying it isn't by the way). Early last century, someone claimed to have proved scientifically that it was impossible for a human to run a mile in under 4 minutes. Then someone did it. There are many more examples, bumblebees are aeronomic impossibilities etc.

    The point is for me at least, that it's a lot safer to believe you don't know something than it is to believe you do.
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    Megatron's Avatar
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    Quote Originally Posted by Pagan View Post
    Exactly.

    Hard for alot of people to accept, but we may not be the brightest bulbs in the universe's Xmas tree, ya know? :wink:
    Oh I don't discount that at all, but there is still a likelyhood that that kind of travel is impossible. That would be the weirdest thing if we know there's life elsewhere but have no way to interact.
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  10. -10
    ckb2001's Avatar
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    Quote Originally Posted by Megatron View Post
    I think it may be light speed travel is an impossibility. That would be a weird one wouldn't it, that there may be life throughout the universe but that life has no way to interact.
    The PRIMARY difference between General Relativity (and thus all deterministic theories in science) and Quantum Mechanics is that all deterministic theories in science have to abide by the rule that nothing can travel faster than the speed of light.

    In Quantum Mechanics however, instantaneous information transfer is possible. For example, quantum entanglement allows one to show that as soon as one of two entangled particles is observed, the other instantaneously has a certain property.

    Specifically, suppose you have one particle that is observed as spin-up at time t=1. At THAT moment, another particle entangled with it will have spin-down (at time t=1), NO MATTER where it is in the universe.

    And quantum mechanics is the single most accurate theory in science, so it's actually likely that information can be transferred instantaneously from one part of the universe to another. What isn't likely is that something made of matter could actually travel faster than the speed of light.

    Complicated, yes, but it's at the heart of the present conflict in physics (dating 70 years) in trying to unify QM and GR.
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