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Mercury-Atlas 5
Mercury-Atlas 5 was an American unmanned spaceflight of the Mercury program. It was launched on November 29, 1961 with Enos, a chimpanzee, aboard. The craft orbited the Earth twice and splashed down about south of Bermuda.
==History==
By November 1961, the Soviet Union had launched Yuri Gagarin and Gherman Titov into orbit during the Vostok 1 and Vostok 2 manned orbital flights while the United States had managed only suborbital ones. At that time NASA was still debating placing a chimpanzee in orbit as part of the Mercury-Atlas subprogram, with NASA headquarters questioning the wisdom of the Manned Spacecraft Center launching another unmanned Mercury mission.
The NASA Public Affairs Office issued a press release stating "The men in charge of Project Mercury have insisted on orbiting the chimpanzee as a necessary preliminary checkout of the entire Mercury program before risking a human astronaut." prior to the flight.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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