STS-109 MS Grunsfeld in payload bay during first EVA

STS109-E-5247 (4 March 2002) --- 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 assigned STS-109 space walks to perform work on the Hubble Space Telescope (HST), went on to replace the giant telescope�s starboard solar array. Their seven-hour space walk ended at 7:38 a.m. (CST) or 13:38 GMT March 4, 2002.