Astronaut John M. Grunsfeld, payload commander, works in tandem with astronaut Richard M. Linnehan, mission specialist, as the two devote their attention to the Power Control Unit replacement task on the giant Hubble Space Telescope (HST). Grunsfeld is anchored in a foot restraint on the end of the Space Shuttle Columbia's Remote Manipulator System (RMS). This marked the third of five STS-109 space walks and the mission's second extravehicular activity (EVA) for the team of Grunsfeld and Linnehan.
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/144614754@N02">NASA Hubble Space Telescope</a>
Taken on 6 March 2002
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/nasahubble/27411451954/">Astronaut John M. Grunsfeld and Richard M. Linnehan EVA</a>