If $\varOmega$_matter= 0.5 today and there were no dark energy,the universe would: A) expand forever B) slow its expansion but never reverse it C) stop expanding and eventually collapse D) oscillate between expansion and collapse

Question

Quizplus · Accepted Answer

If $\varOmega$_matter is less than 1 and there is no dark energy, the universe's density is insufficient to halt its expansion, so it will expand forever.

If Ω\varOmegaΩ matter = 0

If $\varOmega$ _matter= 0