Question

The scientific theory that describes the beginning of the Universe is called the

Expanding Universe Theory
Contracting Universe theory
Big Bang Theory
Oscillating Universe Theory

Answer 1

Big Bang Theory which says the universe came about from the explosion of gases that existed alone 

Answer 2

Answer:

Big Bang Theory

Explanation:

The big bang theory is the theory currently accepted to explain the beginning of the universe. It was developed in 1948 by scientist George Gamow and priest and astronomer Georges Lemaître.

According to this theory, the universe we know emerged as a result of a powerful explosion that released a great energy capable of creating space-time.