Hubble's Mr. Fix-It Astronomer and astronaut John Grunsfeld ‘80 helped give the Hubble Space Telescope its final makeover. by John Grunsfeld ’80 April 20, 2010 Sponsored by John Grunsfeld ’80 heading into the airlock on Space Shuttle Atlantis during spacewalk preparation on STS-125, the May 2009 mission to service the Hubble Space Telescope. Grunsfeld buttoned up in his Extravehicular Activity (EVA) spacesuit prior to a spacewalk on STS-125. Grunsfeld riding on the robotic arm during EVA5 preparing to replace one of the Hubble Space Telescope batteries. With Earth in the background, Grunsfeld hangs out on the Hubble while beginning the task of installing the Cosmic Origins Spectrograph. At the end of the 5th spacewalk, Grunsfeld takes a moment to take a picture with the EVA camera of his spacewalking partner Drew Feustel doing a headstand in the payload bay. On STS-109 in 2002, Grunsfeld signs a thumbs-up during a spacewalk to upgrade the Hubble Space Telescope, with Earth reflected in his visor. During STS-125, Grunsfeld proudly displays his brass rat He didn’t wear it in the spacesuit during his spacewalks, however. “I didn’t want to cut a hole in my suit and die,” he explains.