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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?

Background radiation is present.
Galaxies exist outside of the Milky Way.
The expansion of the universe is accelerating.
Gas giants form farther from the Sun, where temperatures are cooler.

Respuesta :

greyandgoldwolf

Answer: The expansion of the universe is accelerating.

Explanation: Every millisecond the expansion slowly but surely speeds up.

herecamera70831

Answer:

I would say A: "Background radiation is present.

Explanation:

B, C, and D are proving that the universe is still expanding to this very second, the faster the universe expands the bigger it gets (obviously). Gas giants forming farther away from the Sun, once again, shows that the universe is expanding, and the same thing applies with B.

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