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Neil deGrasse Tyson (; born October 5, 1958) is an American astrophysicist, cosmologist, author, science communicator, and television host. Since 1996, he has been the Frederick P. Rose Director of the Hayden Planetarium at the Rose Center for Earth and Space in New York City. The center is part of the American Museum of Natural History, where Tyson founded the Department of Astrophysics in 1997 and has been a research associate in the department since 2003. Born in New York City, Tyson became interested in astronomy at the age of nine after a visit to the Hayden Planetarium. After graduating from the Bronx High School of Science, where he was editor-in-chief of the ''Physical Science Journal'', he completed a bachelor's degree in physics at Harvard University in 1980. After receiving a master's degree in astronomy at the University of Texas at Austin in 1983, he earned his M.Phil. (1989) and Ph.D. (1991) in astrophysics at Columbia University. For the next three years, he was a postdoctoral research associate at Princeton University, and in 1994, he joined the Hayden Planetarium as a staff scientist and the Princeton faculty as a visiting research scientist and lecturer. In 1996, he became director of the planetarium and oversaw its $210-million reconstruction project, which was completed in 2000. From 1995 to 2005, Tyson wrote monthly essays in the "Universe" column for ''Natural History'' magazine, some of which were published in his book ''Death by Black Hole'' (2007). During the same period, he wrote a monthly column in ''Star Date'' magazine, answering questions about the universe under the pen name "Merlin". Material from the column appeared in his books ''Merlin's Tour of the Universe'' (1998) and ''Just Visiting This Planet'' (1998). Tyson served on a 2001 government commission on the future of the U.S. aerospace industry, and on the 2004 Moon, Mars and Beyond commission. He was awarded the NASA Distinguished Public Service Medal in the same year. From 2006 to 2011, he hosted the television show ''NOVA ScienceNow'' on PBS. Since 2009, he has hosted the weekly podcast ''Star Talk''. In 2014, he hosted the television series ''Cosmos: A Spacetime Odyssey'', a reboot of Carl Sagan's 1980 series ''Cosmos: A Personal Voyage''.〔(【引用サイトリンク】title=Cosmos – A Spacetime Odyssey )〕 The U.S. National Academy of Sciences awarded Tyson the Public Welfare Medal in 2015 for his "extraordinary role in exciting the public about the wonders of science".〔"(Neil deGrasse Tyson to Receive Public Welfare Medal – Academy's Most Prestigious Award )" (2015-02-26). National Academy of Sciences. Retrieved 2015-03-09.〕 ==Early life== Tyson was born as the second of three children in Manhattan, New York, into a family living in the Bronx. His mother, Sunchita Maria (née Feliciano) Tyson, was a gerontologist for the U.S. Department of Health, Education and Welfare, and is of Puerto Rican descent. His father, Cyril deGrasse Tyson, an African American, was a sociologist, human resource commissioner for New York City mayor John Lindsay, and the first Director of Harlem Youth Opportunities Unlimited. Tyson's middle name, ''deGrasse'', is from the maiden name of his paternal grandmother, who began life as Altima de Grasse in the British West Indies island of Nevis.〔Farmer, Vernon L.; Shepherd-Wynn, Evelyn (2012). ''Voices of Historical and Contemporary Black American Pioneers'' 1. ABC-CLIO. p. 304. ISBN 9780313392245.〕 Tyson grew up in the Castle Hill neighborhood of The Bronx, and later in Riverdale.〔(Larry King Now: Neil deGrasse Tyson on Climate Change, the Afterlife, and Elon Musk ). Ora.tv. Retrieved June 25, 2015.〕 From kindergarten throughout high school, Tyson attended public schools, all in The Bronx: P.S. 36, P.S. 81, the Riverdale Kingsbridge Academy, and The Bronx High School of Science (1972–76) where he was captain of the wrestling team and editor-in-chief of the ''Physical Science Journal''.〔Farmer & Shepherd-Wynn 2012, p. 319〕 He began his interest in astronomy at the age of nine after visiting the sky theater of the Hayden Planetarium.〔Farmer & Shepherd-Wynn 2012, p. 300〕 He recalls that "so strong was that imprint (the night sky ) that I'm certain that I had no choice in the matter, that in fact, the universe called me." During high school, Tyson attended astronomy courses offered by the Hayden Planetarium, which he called "the most formative period" of his life. He credited Dr. Mark Chartrand III, director of the planetarium at the time, as his "first intellectual role model" and his enthusiastic teaching style mixed with humor inspired Tyson to communicate the universe to others the way he did.〔Farmer & Shepherd-Wynn 2012, p. 309〕 Tyson obsessively studied astronomy in his teens, and eventually even gained some fame in the astronomy community by giving lectures on the subject at the age of fifteen. Astronomer Carl Sagan, who was a faculty member at Cornell University, tried to recruit Tyson to Cornell for undergraduate studies.〔 In his book, ''The Sky is Not the Limit'', Tyson wrote:〔(The Sky Is Not the Limit: Adventures of an Urban Astrophysicist ) Neil deGrasse Tyson, Prometheus Books 2010, p. 43〕 :''My letter of application had been dripping with an interest in the universe. The admission office, unbeknownst to me, had forwarded my application to Carl Sagan's attention. Within weeks, I received a personal letter ...'' Tyson revisited this moment on his first episode of ''Cosmos: A Spacetime Odyssey''. Pulling out a 1975 calendar belonging to the famous astronomer, he finds the day Sagan invited the 17-year-old to spend a day in Ithaca. Sagan had offered to put him up for the night if his bus back to the Bronx did not come. Tyson said, "I already knew I wanted to become a scientist. But that afternoon, I learned from Carl the kind of ''person'' I wanted to become." Tyson chose to attend Harvard University where he majored in physics and lived in Currier House. He was a member of the crew team during his freshman year, but returned to wrestling, eventually lettering in his senior year. In addition to wrestling and rowing in college, he was active in dance, in styles including jazz, ballet, Afro-Caribbean, and Latin Ballroom. Tyson earned a BA degree in physics from Harvard University in 1980 and began his graduate work at the University of Texas at Austin, from which he received an MA degree in astronomy in 1983. Tyson joined its dance, rowing, and wrestling teams. By his own account, he did not spend as much time in the research lab as he should have. His professors encouraged him to consider alternate careers and the committee for his doctoral dissertation was dissolved, ending his pursuit of a doctorate from the University of Texas. Tyson was a lecturer in astronomy at the University of Maryland from 1986 to 1987〔 〕 and in 1988, he was accepted into the astronomy graduate program at Columbia University, where he earned an MPhil degree in astrophysics in 1989, and a PhD degree in astrophysics in 1991 under the supervision of Professor R. Michael Rich (now at UCLA). Rich obtained funding to support Tyson's doctoral research from NASA and the ARCS foundation enabling Tyson to attend international meetings in Italy, Switzerland, Chile, and South Africa〔 and to hire students to help him with data reduction. In the course of his thesis work, he observed using the 0.91 m telescope at the Cerro Tololo Inter-American Observatory in Chile, where he obtained images for the Calán/Tololo Supernova Survey〔 helping to further their work in establishing Type Ia supernovae as standard candles. These papers comprised part of the discovery papers of the use of Type Ia supernovae to measure distances, which led to the improved measurement of the Hubble constant and discovery of dark energy in 1998. He was 18th author on a paper with Brian Schmidt, a future winner of the 2011 Nobel Prize in Physics, in the study of the measurement of distances to Type II Supernovae and the Hubble constant. During his thesis work at Columbia University, Tyson became acquainted with Professor David Spergel at Princeton University, who visited Columbia University in the course of collaborating with his thesis advisor on the Galactic bulge.〔 〕 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「Neil deGrasse Tyson」の詳細全文を読む スポンサード リンク
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