Takao Doi
Born	(1954-09-18)September 18, 1954 (age 71) Tokyo, Japan
Status	Retired
Occupation	Engineer
Space career
JAXA astronaut
Time in space	31d 19h 35min
Selection	1985 NASDA Group
TotalEVAs	2
Total EVA time	12 hours, 43 minutes[1]
Missions	STS-87,STS-123
Mission insignia
Scientific career
Fields	Astronomy
Thesis	Internal velocities in the Orion Nebula (2004)

Takao Doi (土井 隆雄,Doi Takao; born September 18, 1954) is a Japaneseastronaut,engineer and veteran of twoNASASpace Shuttle missions.

Doi holds a doctorate from theUniversity of Tokyo in aerospace engineering, and has studied and published in the fields of propulsion systems andmicrogravity technology. He researched at theInstitute of Space and Astronautical Science and was selected byNASDA as an astronaut candidate in 1985 for the Japanese crewed space program while also conducting research in the United States at NASA'sLewis Research Center and theUniversity of Colorado at Boulder. Doi flew as a mission specialist aboardSTS-87 in 1997, during which he became the first Japanese astronaut to conduct a spacewalk.

He received a Ph.D. in 1983 from the University of Tokyo, and also a PhD in Astronomy fromRice University in 2004.

As an avid amateur astronomer, he discovered supernovaeSN 2002gw andSN 2007aa.^[2][3]

Takao Doi visited theInternational Space Station in March 2008 as a member of theSTS-123 crew. STS-123 delivered the first module of the Japanese laboratory,Kibō, and the CanadianDextre robot to the space station. During this mission, he became the first person to throw a boomerang in space that had been specifically designed for use in microgravity during spaceflight.^[4]

In September 2009, Doi retired from astronaut duty and started working as the chief of Space Applications Section ofUnited Nations Office for Outer Space Affairs.^[5]

In April 2016, he became a professor at the Unit of Synergetic Studies for Space ofKyoto University^[6] and then at the Graduate School of Advanced Integrated Studies in Human Survivability (GSAIS) in April 2020.^[7]

Wikimedia Commons has media related toDoi Takao.

• "DOI Takao biography". JAXA. RetrievedJuly 25, 2021.
• Spacefacts biography of Takao Doi

• Japanese astronauts
• Japanese aerospace engineers
• University of Tokyo alumni
• University of Colorado Boulder alumni
• 1954 births
• Living people
• Rice University alumni
• Space Shuttle program astronauts
• Discoverers of supernovae
• Spacewalkers

• CS1 uses Japanese-language script (ja)
• CS1 Japanese-language sources (ja)
• Articles with short description
• Short description is different from Wikidata
• Articles with hCards
• Pages using infobox person with deprecated parameters
• Articles containing Japanese-language text
• Commons category link is on Wikidata