Hubble's Servicing Mission 4 (SM4) was the most ambitious and complicated to date. Changing out two major science instruments and repairing two others while in space helped to make this mission truly memorable. Thanks to the astronauts of SM4, the Hubble Space Telescope is at the apex of its power and capabilities.
To celebrate that important moment in history, NASA has gathered the footage of Servicing Mission 4 for posterity's sake, and archived hours of footage for all to use.