Question

how long ago when the big bany theroy started

Answer 1

Answer:

I hope it is ok

Explanation:

13.8 billion years ago

Detailed measurements of the expansion rate of the universe place the Big Bang at around 13.8 billion years ago, which is thus considered the age of the universe. After its initial expansion, the universe cooled sufficiently to allow the formation of subatomic particles, and later atoms.

Answer 2

13.8 billiom years ago

I guessed right maybe .....