Q. Who among the following is credited for the discovery of 'Expanding Universe'?
Answer: Edwin Hubble
Notes: Edwin Hubble, an american astronomer, and was the first to prove that the universe is expanding. According to Expanding Universe theory, the universe is presently expanding. Hubble proved that there is a direct relationship between the speeds of distant galaxies and their distances from Earth. This is now known as Hubble’s Law.