Figure 2 -Figure 2 shows a graph of the value of $\Omega$_mass as a function of time in a universe with no dark energy. The five different curves correspond to universes with slightly different values for $\Omega$_mass one second after the Big Bang. Which line corresponds to a universe with the smallest value of $\Omega$_mass one second after the Big Bang? A) A B) B C) C D) D E) E

Question

Quizplus · Accepted Answer

In a universe with no dark energy, a smaller initial mass density (Ω_mass) would result in a universe that expands more rapidly and continuously, leading to a curve that shows the fastest expansion over time.

Figure 2 -Figure 2 Shows a Graph of the Value Ω\OmegaΩ

Figure 2
-Figure 2 Shows a Graph of the Value $\Omega$