Question #5d3b4
1 Answer
Jan 28, 2018
Everything is moving away
Explanation:
We already proved that redshift means an object is moving further away from one's point of view.
Astronomers observed that lights from other galaxies are all redshifted, which tells that they are all receding from us. This is true in any direction you look, therefore, the only conclusion is that this universe is indeed expanding.
