John M. Grunsfeld is an astronaut and scientist with extensive experience as a leader in space and science missions and national space policy. He has served as a NASA astronaut, the Associate Administrator for Science, and Chief Scientist at NASA Headquarters in Washington, D.C. His responsibilities included a $5.6B portfolio of Earth Science, Astrophysics, Planetary Science, Heliophysics, the James Webb Space Telescope, and the NOAA weather satellite program. Previously he served as the Deputy Director of the Space Telescope Science Institute in Baltimore, managing the science program for the Hubble Space Telescope and the forthcoming James Webb Space Telescope. Grunsfeld’s scientific research is in the emerging field of exoplanet studies with specific interest in future astronomical instrumentation, and the search for life beyond Earth. Grunsfeld is also an avid explorer, enjoying mountaineering, sailing, and flying small aircraft.