GK
THE UNIVERSE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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What happens if you reverse the galaxy motion and go back in time?
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Everything must have been condensed into one extremely dense point
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Everything would still be where it is today
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Some things would remain, some would have moved back
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Nobody has a clue
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Explanation:
Detailed explanation-1: -Instead, the expansion of the Universe is accelerating. It’ll never stop, and it’ll never run the Big Bang in reverse.
Detailed explanation-2: -There is a theory that gravity could pull galaxies back together, causing a reverse Big Bang. Which observation makes this theory less likely than the idea that the universe may continue to expand? The expansion of the universe is accelerating.
Detailed explanation-3: -The trite answer is that both space and time were created at the big bang about 14 billion years ago, so there is nothing beyond the universe. However, much of the universe exists beyond the observable universe, which is maybe about 90 billion light years across.
There is 1 question to complete.