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名前:Elwood日付:2015/01/04 05:12:19
Jonny was here cheap antivert Other robotic spaceships are also responsible for taking supplies to the space station. Two firms â SpaceX and Orbital Sciences Corp. â fly missions using their unmanned spacecraft under contracts with NASA. Europe's Automated Transfer Vehicles and Japan's H-II Transfer Vehicles also visit the orbiting outpost to bring goods to the crew.