Thomas Greene is an astrophysicist in the Space Science and Astrobiology Division at NASA’s Ames Research Center in California. He is a co-investigator on the NIRCam and MIRI science instruments of the James Webb Space Telescope. He also conducts observational studies of exoplanets and young stars and develops astronomical instrumentation and missions. While at NASA Ames he has served as the Director of the Ames Center for Exoplanet Studies, the SOFIA Project Scientist, and the Chief of the Astrophysics Branch. Before joining NASA, he worked at the Lockheed Martin Advanced Technology Center on NASA astrophysics missions. Prior to that, Dr. Greene also was on the faculty of the University of Hawaii where he was a support astronomer and later Director of the NASA Infrared Telescope Facility (IRTF). He received his Ph.D. in astronomy from the University of Arizona. Dr. Greene currently co-chairs the US National Academies of Sciences’ committee on astronomy and astrophysics (CAA).