VANDENBERG AIR FORCE BASE, Calif. -- At NASA's Launch Complex-2 at Vandenberg Air Force Base in California the United Launch Alliance Delta II rocket with the Aquarius/SAC-D spacecraft atop is prepared for launch. Liftoff is slated for 7:20 PDT/10:20 EDT today. Aquarius, the NASA-built instrument on the SAC-D spacecraft will provide new insights into how variations in ocean surface salinity relate to fundamental climate processes on its three-year mission.

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Keywords: curiosity, laboratory, mars, rover, science