STS-51-G was the 18th Space Shuttle flight and the 5th by Discovery. It took off from Launch Pad 39-A on June 17, 1985 at 11:33:00 UTC. It landed at Edwards AFB on June 24, 1985 at 13:11:52 UTC. The main payload carried and placed into orbit were the Arabsat 1-B, Morelos 1, Teltar 3-D, and the Spartan 1 satellites.
STS 51-G was the eighteenth flight of a space shuttle, and the fifth flight of Discovery. The mission launched from Kennedy Space Center, Florida, on 17 June 1985. Sultan Salman Al Saud of Saudi Arabia was on board as a payload specialist. All the experiments were successfully accomplished. Discovery landed at Edwards AFB at 9:12 a.m. EDT on 24 June 1985, after a mission duration of 7 days, one hour, 38 minutes and 52 seconds.