John Grunsfeld is an astrophysicist, astronaut, and associate administrator at NASA’s Science Mission Directorate in Washington, D.C.
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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.
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An Astronaut Explores NASA’s Scientific Frontiers
Astronaut and astrophysicist John Grunsfeld leads NASA’s investigations of Earth–and beyond.