** watch future Linda Hall Library lectures live at new.livestream.com/lindahall ** November 7, 2019, in the Main Reading Room of the Linda Hall Library. David H. Levy is one of the most successful comet hunters in history. He has discovered 22 comets, nine of them using his own backyard telescopes. With Eugene and Carolyn Shoemaker at the Palomar Observatory in California he discovered Shoemaker-Levy 9, the comet that collided with Jupiter in 1994. That episode produced the most spectacular explosions ever witnessed in the solar system. Levy is currently involved with the Jarnac Comet Survey, which is based at the Jarnac Observatory in Vail, Arizona, but which has telescopes planned for locations around the world. Dr. Levy is the author or editor of 35 books and other products. He won an Emmy in 1998 as part of the writing team for the Discovery Channel documentary, Three Minutes to Impact. As the Science Editor for Parade Magazine from 1997 to 2006, he was able to reach more than 80 million readers, almost a quarter of the population of the United States. A contributing editor for Sky and Telescope Magazine, he writes its monthly “Star Trails” column, and his “Nightfall” feature appears in each issue of the Canadian magazine, Skynews. Video produced by The VideoWorks of Roeland Park, Kansas.