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.
Eric Boe Eric Allen Boe (born October 1, 1964) is a United States Air Force fighter pilot Colonel, test pilot and a NASA astronaut. He flew as the pilot of Space Shuttle missions STS-126 and STS-133.