TES and THEMIS Principal Investigator, Arizona State University
You can now help choose places on Mars for imaging by the Mars Odyssey orbiter's THEMIS camera. Principal Investigator Phil Christensen explains how. Bill Nye celebrates ten years of SETI@Home. Bruce Betts and Mat Kaplan wonder if giant star Betelgeuse is still there in this week's What's Up, followed by another space trivia contest.