HUBBLE MISSION PHOTOS: Telescope's Final Tune-Up

HUBBLE MISSION PHOTOS: Telescope's Final Tune-Up
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Astronauts Michael Good (left) and Mike Massimino repair Hubble's existing spectrograph during the mission's fourth spacewalk on May 17, 2009.

Massimino had to remove 117 screws as part of the repair, but the last one unexpectedly stuck.

"I was out there and just couldn't believe I wasn't able to get that last bolt of that handrail off--when we trained, it was actually the easiest out of all the 117 fasteners we had to take off of that panel."
—Photograph courtesy NASA
 
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