Here is a thought I read online:
Some scientists describe the universe as, "it was hot when it was young; it will be cold when it grows old". When it is cooling down there won’t be any usable energy. These scientists predict that the universe will be end with the Big Freeze.
This sounds reasonable but I think the ending will come first for humans, animals and plants on the earth or on some other planets if there is any life there; the universe will still be there, but just in different condition. Who knows?






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Do you know any interesting facts about the universe? What are they?