Black Holes

What would happen if the expansion of the cosmos won't reverse and all black holes vanish through Hawking radiation so that the energy density in the entire cosmos reaches the level of Planck energy?



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Yeh, well...This is one of the possible ends to the universe. It will turn cold and dark and everything will cease. But consider this--By the time our Sun goes out humans will be far different from what we are now as we are from the first cells to appear on Earth. So who knows?