John Grunsfeld
Deputy Director, Space Telescope Science Institute
 

"Recent Servicing Missions to the Hubble Space Telescope"
 

Dr. Grunsfeld is a multi-mission shuttle astronaut, who has been on five Space Shuttle missions, including three HST servicing missions.  He has recently joined the Space Telescope Science Institute as Deputy Director to help prepare the institute for operations for the upcoming NASA James Webb Space Telescope.