Two astronauts removing an instrument from the bottom of Hubble.

Astronauts James H. Newman and Michael J. Massimino EVA

Astronauts James H. Newman and Michael J. Massimino participate in the fourth extravehicular activity (EVA) of the STS-109 mission. The two, with Newman on Columbia's Remote Manipulator System (RMS) robotic arm, removed the Faint Object Camera to make room for the new Advanced Camera for Surveys (ACS).

Credits: NASA