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June 9, 2011
Before beginning their presleep period on their next to last day in space, the STS-88 astronauts deployed a small 590-pound satellite called SAC-A for the Argentinean National Committee of Space Activities. Equipped with five technology experiments, including one to track the movement of whales off the coast of Argentina, SAC-A was ejected from a canister in Endeavour's cargo bay at 10:31 p.m. Central time as the shuttle few over the northern Indian Ocean. The satellite is expected to remain in orbit from five to nine months sending back data to Argentine researchers back on Earth.

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