Multiple choice

The theory that refers to an explosion of about 10 to 15 billion years ago, which most astronomers believe to be the origin of the universe, is called

  1. The Redshift Theory

  2. Relativity Theory

  3. Big Bang Theory

  4. Titanic Theory

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The Big Bang Theory, proposed by Georges Lemaitre in 1927, explains the origin of the universe as a massive explosion approximately 13.8 billion years ago (current estimate, revised from the earlier 10-15 billion range).