Eleventh Discovery flight. Deployed the Ulysses spacecraft, a joint NASA/ESA mission to study the poles of the Sun and the interplanetary space above and below the poles. Landed at Edwards Air Force Base, CA. on October 10, 1990. Mission Duration: 98 hours 10 minutes 3 seconds. 

Launch Date: October 6, 1990 Launch Vehicle: Discovery Crew: Commander: Richard N. Richards, Pilot: Robert D. Cabana, Mission Specialists: Bruce E. Melnick, William M. Shepherd, Thomas D. Akers