Rod Pyle has written widely on space and the inner workings of NASA. His most recent book was Curiosity: An Inside Account of the Mars Rover Mission for Random House. He works on outreach programs for NASA's Jet Propulsion Laboratory and Caltech. He is a frequent contributor to the Huffington Post and space.com, as well as other media outlets. Rod has also produced numerous documentaries for The History Channel and Discovery Communications. Other books include the Smithsonian's Destination Moon and Carlton Books' Missions to the Moon. Dr. Jim Green is the former head of the National Space Science Data Center (NSSDC), NASA's largest space science data archive, at Goddard Space Flight Center (GSFC). In August 2006, he became the Director of the Planetary Science Division at NASA Headquarters.