In Columbia's cargo bay, astronaut John M. Grunsfeld (foreground), payload commander, signals to a crewmate inside the crew cabin. Astronauts Grunsfeld and Richard M. Linnehan (out of frame), mission specialist, 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 in a 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/27411452674/">Astronaut John M. Grunsfeld EVA</a>