Big Bang was an explosion that occurred ?
Correct answer: C. 15 Billion years ago
- A. 10 Billion years ago
- B. 20 Billion years ago
- C. 15 Billion years ago
- D. 25 Billion years ago
Explanation
The Big Bang is estimated to have occurred about 13.8 billion years ago, so 15 billion years is the closest option. Older textbooks commonly round the age of the universe to approximately 15 billion years.
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