If we know how old the universe is based on the fact that objects furthest away from us we can see are ~14 billion light years away, how do we know that there was light right from the beginning of the Big Bang? Couldn’t there, in theory, have been darkness for X billions of years before light?

Question

If we know how old the universe is based on the fact that objects furthest away from us we can see are ~14 billion light years away, how do we know that there was light right from the beginning of the Big Bang? Couldn’t there, in theory, have been darkness for X billions of years before light?

In: Physics

Answer 1

Explosions tend to emit light.

Also, it took about 200 million years after the big bang for the first stars to form.

https://starchild.gsfc.nasa.gov/docs/StarChild/questions/question55.html