STS-51DSTS-51D was the 16th flight of NASA's Space Shuttle program, and the fourth flight of Space Shuttle Discovery.The dominant features of the STS-51D emblem are an orbit formed by a Colonial American flag and a Space Shuttle....The seven members of the STS-51D mission are pictured in the midst of a busy training schedule in preparation for...Astronaut Sherwood Springer prepares for an underwater test at Weightless Environment Training Facility (WETF) in response to the discovery of...S85-30878 (15 April 1985) --- Astronaut Jerry L. Ross, left, and Astronaut candidate Mark C. Lee rehearse the deployment of...View of STS 51-D mission specialist Rhea Seddon training with the Arriflex 16mm camera.View of STS 51-D crew commander Karol Bobko training with the Arriflex 16mm camera.View of the shuttle Discovery on the launch pad just prior to STS 51-D launch. The surrounding area is dark,...51D-9089 (S23-9089) (12 April 1985) --- The Space Shuttle mission 51-D crewmembers gather to eat breakfast prior to leaving for...51D-9091 (S23-9091) (12 April 1985) --- The Space Shuttle mission 51-D crewmembers depart the Kennedy Space Center's operations and checkout...Shuttle Discovery on the launch pad for the STS 51-D mission.Just below center of this scene is a distant representation of a large ignition as the Shuttle Discovery lifts off...51D-9094 (12 April 1985) --- A 70mm frame of the Space Shuttle Discovery's 51-D launch at 8:59 a.m. (EST), April...51D-9093 (12 April 1985) --- A 70mm frame of the Space Shuttle Discovery's 51-D launch at 8:59 a.m. (EST), April...KENNEDY SPACE CENTER, FLA. -- STS-51-D: Discovery51D-9092 (12 April 1985) --- The Space Shuttle Discovery ascends the launch complex in Florida and heads through Atlantic skies...51D-09-034 (12-19 April 1985) --- The seven crew members of STS-51D take time, during a busy full week in space,...The TELESAT-1, also known as ANIK C-1, satellite is being released from the cargo bay of the Space Shuttle Orbiter...In this photograph the SYNCOM IV-3, also known as LEASAT 3, satellite moves away from the Space Shuttle Orbiter Discovery....51D-32-013 (12 April 1985) --- A view of the Syncom IV (LEASAT) framed against a cloudy earth's surface after its...51D-9107 (19 April 1985) --- A side-looking, wide view of the Space Shuttle Discovery shows the vehicle on its final...51D-9108 (19 April 1985) --- After a week in space the Space Shuttle Discovery completes Mission 51-D near the point...