Are there any proofs for Big Bang theory, please explain?

1 Answer
Nov 5, 2017

There is excellent evidence in the form of several predictions made by the theory that are observed.

Explanation:

Two stand out:

  1. The fact that galaxies (outside the local group where they are bound by gravity) are receding from us with a velocity proportional to their distance. This implies that in the distant past they were much closer together i.e. a hot, dense state preceded the observed universe, implying a time where all matter was located at a single point.

  2. The cosmic microwave background radiation is that radiation emitted as hard UV or X-rays from the time c. 380 000 years after the Big Bang when the universe had cooled sufficiently to allow electrons to be bound into atoms and the universe became transparent to e-m radiation.