Soyuz T-8 was meant to be the fourth mission to visit the Salyut 7 space station. The mission began on April 20, 1983, 13:10:54 UTC, launching Commander Vladimir Titov, Flight Engineer Gennady Strekalov and Research Cosmonaut Aleksandr Serebrov into orbit. However, the spacecraft failed to dock with the space station and after some further attempts mission had to be aborted. The mission concluded two days later with a safe landing back on Earth on April 22, 1983, 13:28:42 UTC.
Low Earth OrbitSTS-6 was the maiden flight of the Space Shuttle Challenger. It deployed the first Tracking and Data Relay Satellite into orbit for NASA, forming an integral part of NASAs in-space 10. It was also the first Space Shuttle mission involving a spacewalk. It was the first mission in which the Extravehicular Mobility Unit (EMU) was used.
Low Earth Orbit