events
Space Shuttle Discovery launches on STS-51D to deploy two communications satellites.
Related Wikipedia articles
Space Shuttle Discovery
Space Shuttle orbiter (1984–2011)
Space Shuttle Discovery is a retired American Space Shuttle orbiter. The spaceplane was one of the orbiters from NASA's Space Shuttle program and the third of five fully operational orbiters to be built. Its first mission, STS-41-D, flew from August 30 to September 5, 1984. Over…Source: Wikipedia (CC BY-SA)
STS-51-D
1985 American crewed spaceflight to deploy communications satellites
STS-51-D was the 16th flight of NASA's Space Shuttle program, and the fourth flight of Space Shuttle Discovery. The launch of STS-51-D from Kennedy Space Center (KSC), Florida, on April 12, 1985, was delayed by 55 minutes, after a boat strayed into the restricted Solid Rocket…Source: Wikipedia (CC BY-SA)
Communications satellite
Artificial satellite that relays radio signals
A communications satellite is an artificial satellite that relays and amplifies radio telecommunication signals via a transponder; it creates a communication channel between a source transmitter and a receiver at different locations on Earth. Communications satellites are used…Source: Wikipedia (CC BY-SA)
April 12
Day of the year
April 12 is the 102nd day of the year in the Gregorian calendar; 263 days remain until the end of the year.Source: Wikipedia (CC BY-SA)