Which theory talks about the huge explosion that leads to origin of universe?

Explanation

**Step-by-Step Text Solution:**

1. **Understanding the Question**: The question asks about a theory that explains the origin of the universe through a significant explosion.

2. **Identifying the Theory**: The theory that describes a huge explosion leading to the origin of the universe is known as the **Big Bang Theory**.

3. **Explanation of the Big Bang Theory**: According to the Big Bang Theory, the universe originated from an extremely hot and dense state approximately **13.8 billion years ago**. This event is referred to as the "Big Bang," which was a massive explosion that caused the universe to expand.

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