We don’t know whatever happened between the Big Bang and the tiny time afterward known as the “Planck Time” – named after the physicist Max Planck. The first evidence to support the theory of the expanding world was found by American astronomer Edwin Hubble in 1929.
Edwin Hubble (1889-1953)
Edwin Powell Hubble was an American astronomer educated at Chicago and Oxford universities. From 1919, he worked at Mount Wilson observatory. Hubble was first to state that galactic nebulae were galaxies outside the Milky Way. Continue reading