for the real crisis to come, it will be quit a while.

送交者: steven 于 2011-01-31, 01:59:12:

回答: Let's wait and see... 由 suprathinker 于 2011-01-31, 01:12:59:

I think when Sun turns to Red Giant, that is the first real crisis, or either the Milky Way gets suck into the black hole, or the universe reaches big chill, that is a real crisis.

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