Who flew on a 1985 Space Shuttle "Challenger" mission as a Payload Specialist, Claude Nicollier or  Lodewijk van den Berg?
Lodewijk van den Berg Lodewijk van den Berg (] ; born March 24, 1932) is a Dutch American chemical engineer, specializing in crystal growth, who flew on a 1985 Space Shuttle "Challenger" mission as a Payload Specialist.
TDRS-1 TDRS-1, known before launch as TDRS-A, was an American communications satellite which was operated by NASA as part of the Tracking and Data Relay Satellite System. It was constructed by TRW and launched by "Challenger" on its maiden flight, STS-6.