Hubble (Edwin Hubble)

Edwin Hubble was an influential astronomer who, in the early 20th century, discovered that the universe is expanding. By observing that galaxies are moving away from us at speeds proportional to their distance, he provided key evidence for the Big Bang theory. Hubble's work established that the universe is dynamic and constantly changing, transforming our understanding of space and time. His observations laid the foundation for modern cosmology, helping scientists grasp the vastness and evolving nature of the cosmos.