Astronaut John M. Grunsfeld (foreground), payload commander, traverses along the longerons of the Space Shuttle Columbia while astronaut Richard M. Linnehan, mission specialist, uses the Remote Manipulator System's robotic arm to be moved around. The two, participating in the first of their STS-109 space walks to perform work on the Hubble Space Telescope (HST), went on to replace the giant telescope’s starboard solar array during their seven-hour space walk on March 4, 2002.
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/144614754@N02">NASA Hubble Space Telescope</a>
Taken on 4 March 2002
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/nasahubble/27411452964/">Astronaut John M. Grunsfeld and Richard M. Linnehan EVA</a>