I don't think humans will *be* on Earth more than a billion years from now. The planet is going to be uninhabitable by then, even if we don't manage to make it uninhabitable before then, since the Sun's main sequence evolution will make it just enough bigger and hotter to push the habitable zone out around Mars. We might colonize Mars for a while, but I don't think that will last very long because Mars doesn't have the mass to hold onto an atmosphere. So I'm guessing what's left of humanity will be out in the nearer parts of the Orion arm of the galaxy by then.
Of course, they'll still get to see all this in very slow motion. The burst of star formation could prove useful to whatever's left of humanity, as it could result in a number of habitable planets.
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timeasmymeasure
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Date: 2008-05-02 05:09 pm (UTC)I don't think humans will *be* on Earth more than a billion years from now. The planet is going to be uninhabitable by then, even if we don't manage to make it uninhabitable before then, since the Sun's main sequence evolution will make it just enough bigger and hotter to push the habitable zone out around Mars. We might colonize Mars for a while, but I don't think that will last very long because Mars doesn't have the mass to hold onto an atmosphere. So I'm guessing what's left of humanity will be out in the nearer parts of the Orion arm of the galaxy by then.
Of course, they'll still get to see all this in very slow motion. The burst of star formation could prove useful to whatever's left of humanity, as it could result in a number of habitable planets.