STS-109 was Space Shuttle Columbia's Hubble Space Telescope Servicing Mission 3B. The crew retrieved and redeployed Hubble with the Shuttle robotic arm, installed new solar arrays, a new Power Control Unit, the Advanced Camera for Surveys, a reaction wheel assembly, and cooling hardware for NICMOS, and completed five consecutive days of spacewalks by Grunsfeld, Linnehan, Newman, and Massimino.
Alerts are unavailable because this mission is no longer active.