12-Hubble’s Servicing Mission 4 Celebrates Its 15th Anniversary

Servicing Mission 4.
The fifth and final servicing mission to the Hubble Space Telescope made the observatory more scientifically productive than ever. The crew made as many repairs and upgrades possible to ensure it will operate for many years in the post-servicing-mission era.

Fifteen years ago, a remarkable mission unfolded above the Earth. The Hubble Space Telescope, humanity’s eye on the universe, received an unprecedented upgrade during its fifth and final Servicing Mission.

In May 2009, a brave team of astronauts embarked on a daring journey aboard Space Shuttle Atlantis. Their mission? To breathe new life into Hubble, ensuring its legacy of discovery could continue for years to come.

Astronauts Michael Good and Mike Massimino work to replace one of Hubble’s Rate Sensor Units, which contains two gyroscopes, during SM4.
NASA.

STS-125 Mission Specialist 4 Mike Massimino smiles for a photo during the mission’s fourth session of extravehicular activity (EVA4). His EVA partner, Mike Good, can be seen in the background.
NASA.