An American astronomer of the twentieth century. Hubble was the first to show that there are galaxies beyond the Milky Way. He also discovered the red shift, thereby laying the foundation for the Big Bang theory. (See also Hubble Space Telescope.)
The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.