Originally posted by: Jeff7
Originally posted by: fitzov
I'm of the opinion that inter-stellar travel is a huge obstacle, no-matter how intelligent the specie. If we are lucky, we will have colonized Mars before the Sun changes to make the Earth uninhabitable. Beyond that, some moon off of Jupiter or Saturn. Beyond that will require lots of luck and a self-sufficient spacecraft. All of this assumes, of course, that speeds beyond light are impossible. If what we currently know about the laws of physics is correct, then that indeed is the case.
I assume you refer to the red giant stage - that'll be about another 5 billion years.
In that case, 1) Mars won't be safe enough, and 2) The sun will collapse then into a white dwarf. Everywhere would be too cold then.
But 5 billion years - plenty of time for civilization to collapse and rebuild a few thousand times if it so chooses. And hell, by then, maybe we'd have the technology to combine some of the gas giants or something, and start fusion in one of them.
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