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John L. Callas

ORG Jet Propulsion Laboratories Title BIO Dr. John L. Callas received his Bachelor's degree in Engineering from Tufts University in 1981 and his Masters and Ph.D. in Physics from Brown University in 1983 and 1987, respectively. After completing his doctorate, he joined the Jet Propulsion Laboratory in Pasadena, California to work on advanced spacecraft propulsion, which included such futuristic concepts as electric, nuclear and antimatter propulsion. Since 1989 he has worked as a Research Scientist at JPL on six Mars Missions. Most recently, Dr. Callas was appointed as the Science Manager for the Mars Exploration Rover Project, a project to send twin rovers to the surface of Mars in 2003. In addition to his work on Mars Exploration, Dr. Callas is involved in the development of instrumentation for astrophysics and planetary science, and teaches mathematics at Pasadena City College as an adjunct faculty member.