Astronaut on Shuttle mission C Shuttle astronaut with Solar Maximum Satellite in the hold of the Space Shuttle Challenger During Shuttle mission C launched on April astronauts George Nelson and James van Hoften captured the Solar Maximum Satellite that had failed in orbit four years before took it back to Challenger where they repaired and released it again This was the first repair of a satellite in space The astronauts also flighttested Manned Manoeuvering Units MMUs and operated the Cinema and IMAX Camera Systems
