Who flew on more Space Shuttle missions, meteorologist Piers Sellers or chemical engineer Lodewijk van den Berg?
Piers Sellers Piers John Sellers OBE (11 April 1955 – 23 December 2016) was a British-American meteorologist, NASA astronaut and Director of the Earth Science Division at NASA/GSFC. He was a veteran of three space shuttle missions.
STS-41-G STS-41-G was the 13th flight of NASA's Space Shuttle program and the sixth flight of Space Shuttle "Challenger". "Challenger" launched on 5 October 1984, and conducted the second shuttle landing at Kennedy Space Center on 13 October. It was the first shuttle mission to carry a crew of seven, including the first crew with two women (Sally Ride and Kathryn Sullivan), the first American EVA involving a woman (Sullivan), the first Australian-born person to journey into space and the first astronaut with a beard (Paul Scully-Power) and the first Canadian astronaut (Marc Garneau).