John Grunsfeld is an astrophysicist, astronaut, and associate administrator at NASA’s Science Mission Directorate in Washington, D.C.
Segment
Read More
Planning for ‘Curiosity’ on Mars
NASA scientist John Grunsfeld gives a preview of the Mars Curiosity mission, from the landing’s ‘seven minutes of terror’ to the plans for the exploration ahead.
Segment
Read More
An Astronaut Explores NASA’s Scientific Frontiers
Astronaut and astrophysicist John Grunsfeld leads NASA’s investigations of Earth–and beyond.