STS-51A was a space shuttle mission that was launched on November 8, 1984. The mission was flown by the space shuttle Discovery and was the 15th mission in the Space Transportation System (STS) program. The primary objectives of the mission were to deploy two communications satellites, the Telesat-H and the Anik C-3, and to perform various scientific experiments in the Spacelab module. The mission patch for STS-51A features the space shuttle Discovery, which is surrounded by a blue circle representing the Earth. The patch also features the words “STS-51A” and “Discovery,” as well as the mission’s primary payloads, the Telesat-H and the Anik C-3 satellites. The patch also includes the insignias of NASA and the Spacelab program.