IN SPACE - MAY 16: In this handout from NASA, Astronaut John Grunsfeld, STS-125 mission specialist, participates in the mission's third session of extravehicular activity (EVA) as work continues to refurbish and upgrade the Hubble Space Telescope May 16, 2009 in Space. The space shuttle Atlantis' mission is to overhaul the Hubble Space Telescope in order to extend its working life. (Photo NASA via Getty Images)
