IN SPACE - MAY 16:  In this handout from NASA, Astronaut John Grunsfeld gets help from astronaut Mike Massimino, both STS-125 mission specialists, in the donning of his Extravehicular Mobility Unit (EMU) spacesuit on the middeck of the Earth-orbiting Space Shuttle Atlantis in preparation for the mission's third session of extravehicular activity (EVA) May 16, 2009 in Space. Astronaut Andrew Feustel is at right and Michael Good works in the background. The space shuttle Atlantis' mission is to overhaul the Hubble Space Telescope in order to extend its working life. Getty Images logo Getty Images 9 months ago

IN SPACE - MAY 16: In this handout from NASA, Astronaut John Grunsfeld gets help from astronaut Mike Massimino, both STS-125 mission specialists, in the donning of his Extravehicular Mobility Unit (EMU) spacesuit on the middeck of the Earth-orbiting Space Shuttle Atlantis in preparation for the mission's third session of extravehicular activity (EVA) May 16, 2009 in Space. Astronaut Andrew Feustel is at right and Michael Good works in the background. The space shuttle Atlantis' mission is to overhaul the Hubble Space Telescope in order to extend its working life.