Team Hubble

BackThird-generation Solar Array Installation

Astronauts John M. Grunsfeld, Servicing Mission 3B (STS-109) payload commander, works in tandem with astronaut Richard M. Linnehan, mission specialist, as the two devote their attention to the replacing one of the Hubble Space Telescope's two second-generation solar arrays, and a Diode Box Assembly. The solar array was replaced with a new, third-generation solar array, which is called SA3. Linnehan stands on a foot restraint on the end of the Space Shuttle Columbia's Remote Manipulator System (RMS). The space walkers also did some prep work for STS-109's other sessions of extravehicular activity (EVA).