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ISS014-E-18187 (27 March 2007) --- Backdropped by the blackness of space, an unpiloted Progress 23 supply vehicle departs from the Zvezda Service Module aft port of the International Space Station on March 27, 2007, carrying its load of trash and unneeded equipment to be deorbited and burned up in Earth's atmosphere. The undocking clears the way for the relocation of the Soyuz 13 (TMA-9) from the Zarya Module nadir port to the Zvezda Service Module aft port.
