What's the Big Bang?
A)the creation of the universe
B)microwave radiation from all directions in the sky
C)the Hubble relation
D)a punk rock band

Question

Quizplus · Accepted Answer

The Big Bang is the theory that explains the origin of the universe as an explosive event that occurred approximately 13.8 billion years ago. This event marked the beginning of the universe as we know it, with all matter and energy emerging from a single, infinitely dense and hot point. This theory is supported by a variety of evidence, including the observed expansion of the universe, the cosmic microwave background radiation, and the abundance of light elements.