He is the lead scientist for the Pancam color imaging system on the NASA Mars Exploration Rovers Spirit and Opportunity, and is also a member of the science teams of the NASA Mars Pathfinder, Near Earth Asteroid Rendezvous (NEAR), Mars 2001 Odyssey Orbiter, Mars 2005 Reconnaissance Orbiter, and 2009 Mars Science Laboratory rover mission teams. He has authored or co-authored more than 150 peer-reviewed scientific papers on Mars, is an editor for Icarus, and has an asteroid named after him (8146 Jimbell) by the International Astronomical Union. Bestsellers in this subject