Astronauts Mike Massimino (left) and John Grunsfeld, both STS-125 mission specialists, practice repairing Hubble Space Telescope hardware during a training session at NASA's Johnson Space Center.
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Taken in
Johnson Space Center
Author
NASA
Description
Astronauts Mike Massimino (left) and John Grunsfeld, both STS-125 mission specialists, practice repairing Hubble Space Telescope hardware during a training session at NASA's Johnson Space Center.