UC-Berkeley Astronomer Bethany Cobb delivers a lecture on the history of astronomy and the legacy of Edwin Hubble, followed by an audience Q and A. This program was recorded in collaboration with the Commonwealth Club of California, on October 1, 2009.Bethany Cobb: In Galileo's Footsteps. Learn about the great astronomy pioneer Edwin Hubble and how his use of a 100-inch telescope at the Mount Wilson Observatory in California not only resolved the "Great Debate" over the scale of the universe but also provided radical evidence that the universe is expanding. Bethany Cobb is a National Science Foundation Astronomy and Astrophysics Postdoctoral Fellow at UC Berkeley.She received her Ph.D. at Yale University for research on massive stellar explosions called gamma-ray bursts. She is dedicated to sharing her love of astronomy with others and is the astronomer for The Old Farmer's Almanac.