Tenth Discovery flight. Deployed the Edwin P. Hubble Space Telescope (HST)astronomical observatory. Designed to operate above the Earth's turbulent and obscuring atmosphere to observe celestial objects at ultraviolet, visible and near-infrared wavelengths. Joint NASA/ESA mission. Landed April 29, 1990 at Edwards Air Force Base, CA. Mission Duration: 121 hours 16 minutes 6 seconds.

Launch Date: April 24, 1990 Launch Vehicle: Discovery Crew: Commander: Loren J. Shriver, Pilot: Charles F. Bolden, Mission Specialists: Bruce McCandless, Steven A. Hawley, Kathryn D. Sullivan.