JIM BELL is an Assistant Professor in the Cornell University Astronomy department. He studied planetary science at Caltech and received his PhD from the University of Hawaii in 1992. His research focuses on the geology, chemistry, and mineralogy of planets, asteroids, and comets using data obtained from telescopes and spacecraft missions. He is a member of a number of space ... Read morescience teams, including the NASA Mars Pathfinder and NEAR. Author of some 70 first and co-authored journal publications, he is a frequent contributor to popular astronomy magazines and radio shows. The International Astronomical Union recently awarded him the honor of having asteroid 8146 Jimbell named after him. JACQUELINE MITTON trained as an astronomer (MA, Oxford, - physics; PhD, Cambridge - astrophysics). For about ten years she has been a full-time writer and media consultant specializing in astronomy. She has been the Press Officer (formerly called Public Relations Officer) of the Royal Astronomical Society since 1989, and was Editor of the Journal of the British Astronomical Association 1989–1993. She is the author or co-author of 16 published books. Show Less