Professional planet hunter, University of California, Berkeley
UC Berkeley astronomer Geoff Marcy and his team have discovered more planets outside our solar system than anyone else. We talk to him as he continues the search from the Keck telescope on Hawaii. Emily Lakdawalla tells us what may happen to the Huygens probe when it either bumps or splashes down on Saturn's moon Titan. Bruce Betts tells us What's Up in the sky this week while he offers up a new trivia contest.