Are Ulf Merbold and Michael Foale both astronauts?
Michael Foale Colin Michael Foale, CBE (born 6 January 1957) is a British-American astrophysicist and former NASA astronaut. He is a veteran of six Space Shuttle missions and extended missions on both Mir and the International Space Station. He was the first Briton to perform a space walk, and until 17 April 2008, he held the record for most time spent in space by a US citizen: 374 days, 11 hours, 19 minutes. He still holds the cumulative-time-in-space record for a UK citizen.
Rex J. Walheim Rex Joseph Walheim (born October 10, 1962) is a United States Air Force officer, engineer and a NASA astronaut. He has flown three space shuttle missions, STS-110, STS-122, and STS-135. Rex has logged over 566 hours in space, including 36 hours and 23 minutes of spacewalk (EVA) time. He was assigned as mission specialist and flight engineer on STS-135, the final space shuttle mission.