Astronauts at Work on Hubble (IMAGE)

ESA/Hubble Information Centre

Astronauts at Work on Hubble

Caption

Astronauts Andrew Feustel (partially obscured at top) and John Grunsfeld work to install the new Cosmic Origins Spectrograph onboard the NASA/ESA Hubble Space Telescope on the third spacewalk of Servicing Mission 4.

Credit

NASA

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