The Delta II rocket with it's Aquarius/SAC-D spacecraft payload is seen as the service structure is rolled back on Thursday, June 9, 2011, at Vandenberg Air Force Base, Calif. The joint Aquarius/Satélite de Aplicaciones Científicas (SAC)-D mission, set to launch June 10, will map the salinity at the ocean surface, information critical to improving our understanding of two major components of Earth's climate system: the water cycle and ocean circulation. Photo Credit: (NASA/Bill Ingalls) Aquarius SAC-D Launch 2

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Photo credit: © NASA Image Collection / Alamy / Afripics
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