Dr. Thronson’s responsibilities include identification, assessment, and advocacy for advanced human/robotic programs at NASA Goddard Space Flight Center in coordination with other NASA Centers, industry, and the scientific community. Recently, he has led in proposing multiple technology experiments on ISS, using the ISS as a test bed for future large optical systems in space, and concepts for future long-duration habitats in free space. He has served as the program scientist for the Hubble Space Telescope (HST), the Spitzer Space Telescope (SIRTF), the James Webb Space Telescope (JWST), and the Stratospheric Observatory for Infrared Astronomy (SOFIA), among other missions. Dr. Thronson received his Ph.D. in astrophysics in 1978 from the University of Chicago and has been a faculty member and on the senior staff of the Universities of Arizona and Wyoming, and the Royal Observatory, Edinburgh. He has published more than 100 research papers and co-edited 12 books.