STS-125 MS1 Good and MS4 Massimino during EVA4

S125-E-009194 (17 May 2009) --- With a mostly dark home planet behind him, astronaut Michael Good, STS-125 mission specialist, rides Atlantis' remote manipulator system arm to the exact position he needs to be to continue work on the Hubble Space Telescope. Astronaut Mike Massimino, who shared two spacewalks with Good during the last week, is out of frame.