Former Astronaut, President of Endless Frontier Associates
Dr. John Grunsfeld is the founder and President of Endless Frontier Associates an aerospace engineering firm specializing in space science, robotics, in-space assembly, and manufacturing. In 2016 Grunsfeld retired as NASA Associate Administrator for the Science Mission Directorate. He has been the NASA Chief Scientist, Deputy-Director of the Space Telescope Science Institute, Professor of Physics and Astronomy at Johns Hopkins University and had an 18-year career as a NASA Astronaut. Grunsfeld is a veteran of five space flights and has spent over 58 days in space, including 8 spacewalks. He served as a mission specialist on STS-67 (1995), flight engineer on STS 81 (1997), and three missions to the Hubble Space Telescope on STS-103 (1999), STS-109 (2002), and STS-125 (2009).