there is a theory that gravity could pull galaxies back together, causing a reverse big bang. which…

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?\n○ background radiation is present.\n○ galaxies exist outside of the milky way.\n○ the expansion of the universe is accelerating.\n○ gas giants form farther from the sun, where temperatures are cooler.

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?\n○ background radiation is present.\n○ galaxies exist outside of the milky way.\n○ the expansion of the universe is accelerating.\n○ gas giants form farther from the sun, where temperatures are cooler.

Answer

Brief Explanations:

If the universe's expansion is accelerating, gravity is not strong enough to pull galaxies back together for a reverse big - bang. Background radiation is related to the early universe but not to the current expansion trend. The existence of other galaxies is a general fact not related to the expansion's future. The formation of gas giants is a solar - system related phenomenon, not relevant to the universe's overall expansion.

Answer:

The expansion of the universe is accelerating.