What contributions did edwin hubble make?
He was the first person to show that the universe is expanding. Hubble discovered the asteroid 1373 Cincinnati on August 30, 1935. He also wrote The Observational Approach to Cosmology and The Realm of the Nebulae around this time. Hubble spent much of the later part of his career attempting to have astronomy considered an area of physics, instead of being its own science. He did this largely so that astronomers – including himself – could be recognized by the Nobel Prize Committee for their valuable contributions to astrophysics. This campaign was unsuccessful for a long time. The Nobel Prize Committee eventually decided that astronomical work would be eligible for the physics prize. Unfortunately for Hubble, this occurred in 1953 some months after his death. The Nobel Prize is never awarded posthumously.