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is a Japanese astronaut and a veteran of two NASA space shuttle missions. Doi holds a doctorate from the University of Tokyo in aerospace engineering, and has studied and published in the fields of propulsion systems, and microgravity technology. He researched at the Institute of Space and Astronautical Science and was selected by NASDA as an astronaut candidate in 1985 for the Japanese manned space program while also conducting research in the United States at NASA's Lewis Research Center and the University of Colorado at Boulder. Doi flew as a mission specialist aboard STS-87 in 1997, during which he became the first Japanese astronaut to conduct a spacewalk. He received a Ph.D in Astronomy from Rice University in 2004. Takao Doi visited the International Space Station in March 2008 as a member of the STS-123 crew. STS-123 delivered the first module of the Japanese laboratory, Kibō, and the Canadian Dextre robot to the space station. During this mission, he became the first person to throw a boomerang in space that was specifically designed for use in microgravity during spaceflight.〔(【引用サイトリンク】title=Boomerangs in Space )〕 Doi retired from the astronaut duty and he works as the chief of Space Applications Section of United Nations Office for Outer Space Affairs starting September 2009.〔 (found in archive.org capture)〕 As an avid amateur astronomer, he found supernovae SN 2002gw and SN 2007aa.〔(【引用サイトリンク】title=IAUC 7995 )〕〔(【引用サイトリンク】title=Supernova 2007aa in NGC 4030 )〕 ==Notes== 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「Takao Doi」の詳細全文を読む スポンサード リンク
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