Astronauts Andrew J. Feustel (foreground), Michael J. Massimino (right) and John M. Grunsfeld (out of frame), STS-125 mission specialists, participate in a training session with a Hubble Space Telescope mockup in the Neutral Buoyancy Laboratory (NBL) near Johnson Space Center.
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Taken in
Johnson Space Center
Author
NASA
Description
Astronauts Andrew J. Feustel (foreground), Michael J. Massimino (right) and John M. Grunsfeld (out of frame), STS-125 mission specialists, participate in a training session with a Hubble Space Telescope mockup in the Neutral Buoyancy Laboratory (NBL) near Johnson Space Center.