The unpiloted ISS Progress 35 supply vehicle departs from the International Space Station's Pirs Docking Compartment on April 22, 2010. Filled with trash and discarded items, the Progress will be used for scientific experiments until it is deorbited and burned up in Earth's atmosphere. Its departure clears the way for the ISS Progress 37 cargo ship that is scheduled to launch to the station April 28.
NASA
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