What do astronomers mean by the Big Bang?
A)the event that marked the birth of our solar system
B)the explosion of a massive star at the end of its life
C)the event that marked the beginning of the expansion of the universe
D)a gigantic explosion that blew all the galaxies in the universe to smithereens

Question

Quizplus · Accepted Answer

The Big Bang refers to the initial event that marked the beginning of the expansion of the universe, about 13.8 billion years ago. It is not related to the birth of our solar system or the explosion of individual stars. It was not an explosion in the traditional sense, but rather a rapid expansion of all matter and energy in the universe from a single point.

What Do Astronomers Mean by the Big Bang