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Dennis Tito

Dennis Anthony Tito (born August 8, 1940) is an American engineer and multimillionaire, most widely known as the first space tourist to fund his own trip into space. In mid-2001, he spent nearly eight…

Dick Scobee

Francis Richard Scobee was an American pilot and astronaut. He was killed commanding the Space Shuttle Challenger, which suffered catastrophic booster failure during launch of the STS-51-L mission….

Dirk Frimout

Dirk Dries David Damiaan, Viscount Frimout (born 21 March 1941 in Poperinge, Belgium) is an astrophysicist for the European Space Agency. He flew aboard NASA Space Shuttle mision STS-45 as a payload s…

Dmitri Kondratyev

Dmitri Yur’yevich Kondrat’yev Russian: Дмитрий Юрьевич Кондратьев (born 25 May 1969 in Irkutsk, Russia) is a retired Russian cosmonaut. He served as a crewmember on the International Space Station lon…

Dominic L. Pudwill Gorie

Dominic Lee Pudwill Gorie is a retired United States Navy officer and NASA astronaut. He is a veteran of four space shuttle missions….

Don L. Lind

Don Leslie Lind, Ph.D. is an American scientist and a former naval officer and aviator, and NASA astronaut. He graduated from the University of Utah with an undergraduate degree in physics in 1953. Fo…

Donald A. Thomas

Donald Alan Thomas, Ph.D. is an American engineer and a former NASA astronaut….

Donald E. Williams

Captain Donald Edward Williams was an American naval officer and aviator, test pilot, mechanical engineer and NASA astronaut. He logged a total of 287 hours and 35 minutes in space….

Donald H. Peterson

Donald Herod Peterson was a United States Air Force officer and NASA astronaut. Peterson was originally selected for the Air Force Manned Orbiting Laboratory (MOL) program, but, when that was canceled…

Donald Holmquest

Donald Lee Holmquest (born April 7, 1939) is an American lawyer, as well as a physician, electrical engineer and former NASA astronaut. Holmquest was selected as a scientist-astronaut by NASA in Augus…