Who flew on more Space Shuttle missions, meteorologist Piers Sellers or chemical engineer 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.
STS-47 STS-47 was the 50th Space Shuttle mission of the program, as well as the second mission of Space Shuttle Endeavour. The mission mainly involved conducting experiments in life and material sciences.