Question

According to the Big Bang Theory, the Universe is expanding. Galaxies are constantly shifting away from one another at different speeds. State and explain the law that explains this phenomenon​

Answer 1

Answer:

The Doppler red-shift of light observed from distant stars and galaxies gives evidence that the universe is expanding (moving away from a central point). This allows for Big Bang Theory, because after a “bang” occurs all of the matter moves away from the point of origin