Astronauts

Daniel T. Barry

National Aeronautics and Space Administration

Daniel W. Bursch

National Aeronautics and Space Administration

David Hilmers

National Aeronautics and Space Administration

David Leestma

National Aeronautics and Space Administration

David Mackay

Virgin Galactic

David M. Brown

National Aeronautics and Space Administration

David M. Walker

National Aeronautics and Space Administration

David Saint-Jacques

Canadian Space Agency

David Scott

National Aeronautics and Space Administration

David Wolf

National Aeronautics and Space Administration

Deborah Martorell

Blue Origin

Deke Slayton

National Aeronautics and Space Administration

Deng Qingming

China National Space Administration

Denis Matveev

Russian Federal Space Agency (ROSCOSMOS)

Deniz Burnham

National Aeronautics and Space Administration

Dennis Tito

Dick Scobee

National Aeronautics and Space Administration

Dirk Frimout

European Space Agency

Dmitri Kondratyev

Russian Federal Space Agency (ROSCOSMOS)

Dmitriy Petelin

Russian Federal Space Agency (ROSCOSMOS)

Dominic A. Antonelli

National Aeronautics and Space Administration

Dominic L. Pudwill Gorie

National Aeronautics and Space Administration

Donald A. Thomas

National Aeronautics and Space Administration

Donald E. Williams

National Aeronautics and Space Administration

Donald Holmquest

National Aeronautics and Space Administration

Donald H. Peterson

National Aeronautics and Space Administration

Donald Pettit

National Aeronautics and Space Administration

Donald R. McMonagle

National Aeronautics and Space Administration

Don L. Lind

National Aeronautics and Space Administration

Donn F. Eisele

National Aeronautics and Space Administration

Dorothy Metcalf-Lindenburger

National Aeronautics and Space Administration

Douglas G. Hurley

National Aeronautics and Space Administration

Douglas H. Wheelock

National Aeronautics and Space Administration

Doug Shane

Virgin Galactic

Duane G. Carey

National Aeronautics and Space Administration

Duane Graveline

National Aeronautics and Space Administration