STS-41-C Challenger was launched from Kennedy Space Center, Florida, on April 6, 1984. The crew included Captain Robert Crippen (spacecraft commander), Mr. F. R. (Dick) Scobee (pilot), and fellow mission specialists, Dr. George D. Nelson and Dr. James van Hoften. During this mission, the crew successfully deployed the Long Duration Exposure Facility (LDEF); retrieved the ailing Solar Maximum Satellite, repaired it on board Challenger, and replaced it in orbit using the robot arm called the Remote Manipulator System (RMS). The mission also included flight testing of Manned Maneuvering Units (MMUs) in two extravehicular activities (EVAs); operation of the Cinema 360 and IMAX camera systems, as well as a bee hive honeycomb structures student experiment. Mission duration was 7 days before landing at Edwards Air Force Base, California, on April 13, 1984.