Mario Livio talks Galileo, the Hubble Telescope, modern and historical science denial, and the far future of life in the universe. He also discusses his book, Galileo and the Science Deniers, which provides a fresh interpretation of the life of Galileo Galilei, one of history's greatest and most fascinating scientists, that sheds new light on his discoveries and how he was challenged by science deniers.

Read an excerpt of Galileo and the Science Deniers