van den Berg Credit - www.spacefacts.de

Personal: Male, Married, Two children. Born in Sluiskil, Netherlands. PhD Master of science in chemical engineering from Technical University, Delft, The Netherlands, 1961. Master of Science, 1972, followed by Ph.D.in 1975 in physics from the University of Delaware. American citizen from 1975. Chemical engineer with EG and G Corporation in Goleta, California.

Astronaut Career

Astronaut Group: Payload Specialist. Inactive Entered space service: 5 June 1983. Left space service: 6 May 1985. Number of Flights: 1.00. Total Time: 7.01 days.

Joined Constellation Technology Corporation.

• 29 April 1985 Flight: STS-51-B. Flight Up: STS-51-B. Flight Back: STS-51-B. Flight Time: 7.01 days.

29 April 1985 - STS-51-B. Manned seven crew. Deployed Nusat; carried Spacelab 3. Payloads: Spacelab-3 experiments, habitable Spacelab and mission peculiar experiment support structure. The experiments represented a total of five different disciplines: materials processing in space, environmental observa-tions, life science, astrophysics, and technology experiments. Two getaway specials (GAS). The flight crew was split into gold and silver shifts working 12-hour days during the flight.