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Progress M-55, identified by NASA as Progress 20 or 20P, was a Progress spacecraft used to resupply the International Space Station. It was a Progress-M 11F615A55 spacecraft, with the serial number 355. Progress M-55 was launched by a Soyuz-U carrier rocket from Site 1/5 at the Baikonur Cosmodrome. Launch occurred at 18:38:20 GMT on 21 December 2005.〔 The spacecraft docked with the ''Pirs'' module at 19:46:18 GMT on 23 December.〔 〕 It remained docked for almost six months before undocking at 14:06:01 GMT on 19 June 2006〔 to make way for Progress M-57. It was deorbited at 17:06:01 GMT on 19 June 2006.〔 The spacecraft burned up in the atmosphere over the Pacific Ocean, with any remaining debris landing in the ocean at around 17:53:14 GMT.〔 Progress M-55 carried supplies to the International Space Station, including food, water and oxygen for the crew and equipment for conducting scientific research. ==See also== *List of Progress flights *List of unmanned spaceflights to the ISS 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Progress M-55」の詳細全文を読む スポンサード リンク
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