By the time the sun expands enough to engulf the Earth, human species (assuming we survive) has either evolved to something else, has probably diverged into multiple species (with or without expansion into space) or it's our potential successor species that has to cope with the problem.
Thinking backwards, I think that even the age of the whole human civilization is too brief a time to make any definitive conclusions about the fate of the universe (or, according to some quantum phycisists, multiverse). In the fortcoming years cosmologists are likely to change their mind numerous times.
On the other hand, IMO, nature recycles everything. It just may be that the cosmological scales are longer than solar lifetimes.
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Date: 2007-06-07 01:38 pm (UTC)Thinking backwards, I think that even the age of the whole human civilization is too brief a time to make any definitive conclusions about the fate of the universe (or, according to some quantum phycisists, multiverse). In the fortcoming years cosmologists are likely to change their mind numerous times.
On the other hand, IMO, nature recycles everything. It just may be that the cosmological scales are longer than solar lifetimes.