Edwin Hubble

Edwin Hubble was an American astronomer and cosmologist who made groundbreaking contributions to our understanding of the universe. Born in 1889, Hubble studied astronomy at the University of Chicago and later at the University of California, Berkeley. He worked at the Yerkes Observatory and later at the Mount Wilson Observatory, where he made his most famous discovery: the expansion of the universe. Hubble's work revolutionized our understanding of the cosmos and paved the way for modern cosmology.