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Crew portrait for STS-59 ((standing, rear, from left) American NASA astronaut Kevin P Chilton and American NASA astronaut Sidney M Gutierrez (seated, from left) American NASA astronaut Linda M Godwin, American NASA astronaut Thomas D Jones, American NASA astronaut Jerome Apt III, and American NASA astronaut Michael R Clifford), wearing launch and entry suits, ahead of Space Shuttle Endeavour mission STS-59, at Johnson Space Center in Houston, Texas, January 1994. The primary objective of STS-59 (9th April to 20th April 1994) is to use the Space Radar Laboratory-1 (SRL-1), as part of NASA's Mission to Planet Earth program, to study the Earth's ecosystem. (Photo by Space Frontiers/Archive Photos/Hulton Archive/Getty Images)