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Originally named the Venus Orbiting Imaging Radar (VOIR), its initial design was scaled back and the craft was redesignated the Venus Radar Mapper (VRM). Eventually the machine would be called MAGELLAN, after the Portuguese navigator Ferdinand Magellan (circa 1480-1521).
Mission STS-30
Space Shuttle: Atlantis OV-104
crew:              5
Launch:           May 4, 1989, 18:46:59 UTC
                      Kennedy Space Center, LC-39B
Landing:          May 8, 1989, 19:43:27 UTC
                      Edwards Air Force Base, runway 22
Duration:         4d 0h 56m 28s