What caused the Big Bang and the expansion of the universe?
A) the separation of the strong nuclear force as a distinct force
B) the decoupling of radiation from matter
C) an unknown cause, with expansion starting suddenly and continuing to this time
D) a universal repulsive force stronger than the gravitational attraction between matter in the universe

Question

Quizplus · Accepted Answer

While there are many theories and hypotheses about the cause of the Big Bang and the expansion of the universe, none have been conclusively proven. The most commonly accepted idea is that the universe began as a singularity, an infinitely dense and small point in space and time, and suddenly expanded in a rapid and dramatic event known as the Big Bang. This expansion has continued to this day, driven by an unknown force or energy sometimes referred to as dark energy.

What Caused the Big Bang and the Expansion of the Universe