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Feustel and Grunsfeld during EVA3

Feustel and Grunsfeld during EVA3

Astronauts Andrew Feustel and John Grunsfeld (partially obscured at bottom, waving), both STS-125 mission specialists, participate in the mission's third session of extravehicular activity (EVA3), as work continues to refurbish and upgrade the Hubble Space Telescope. During the six-hour, 36-minute spacewalk on May 16, 2009, Grunsfeld and Feustel removed the Corrective Optics Space Telescope Axial Replacement (COSTAR) and installed in its place the new Cosmic Origins Spectrograph (COS). They also completed the Advanced Camera for Surveys (ACS) electronic card replacement work, and completed part 2 of the ACS repair, installing a new electronics box and cable.

Credit: NASA

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Photo taken on 16 May 2009 (© NASA Hubble / Flickr)

Related tags :
 hubble, hubble space telescope, sts-125, hubble servicing mission, hst, servicing mission 4, sm4, astronauts, spacewalk, space shuttle, earth, atlantis, nasa, drew feustel, andrew feustel, john grunsfeld
 

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