Alternate and Back-up (not Flown) Payload Specialists
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- STS-9
Wubbo Ockels, Michael Lampton
- STS-40
Robert W. Phillips
- STS-41-G
Robert Thirsk
- STS-51-F
George W. Simon, Diane K. Prinz
- STS-61-A
Ulf Merbold
- STS-50
Joseph M. Prahl, Albert Sacco
- STS-65
Jean-Jacques Favier
- STS-73
David H. Matthiesen, R. Glynn Holt
- STS-78
Pedro Duque, Luca Urbani
- STS-83
Paul Ronney
- STS-94
Paul Ronney
- STS-90
Alexander W. Dunlap, Chiaki Mukai
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Famous quotes containing the word alternate:
“Germany is a queer country: one can’t regard it dispassionately. I alternate between hating it thoroughly, stick, stock and stone, and yearning over it fit to break my heart. I can’t help feeling it a young and adorable country—adolescent—with the faults of adolescence.”
—D.H. (David Herbert)