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?
O Background radiation is present.
O Galaxies exist outside of the Milky Way.
O The expansion of the universe is accelerating.
O Gas giants form farther from the Sun, where temperatures are cooler.
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There is a theory that gravity could pull galaxies back together, causing a reverse big bang.
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