Career:
Tyson's research has focused on observations in cosmology, stellar evolution, galactic astronomy, bulges, and stellar formation. He has held numerous positions at institutions including the University of Maryland, Princeton University, the American Museum of Natural History, and Hayden Planetarium.
In 1994, Tyson joined the Hayden Planetarium as a staff scientist while he was a research affiliate in Princeton University. He became acting director of the planetarium in June 1995 and was appointed director in 1996.[32] As director, he oversaw the planetarium's $210 million reconstruction project, which was completed in 2000. Upon being asked for his thoughts on becoming director, Tyson said "...when I was a kid... there were scientists and educators on the staff at the Hayden Planetarium... who invested their time and energy in my enlightenment... and I've never forgotten that. And to end up back there as its director, I feel this deep sense of duty, that I serve in the same capacity for people who come through the facility today, that others served for me".[33]
Tyson has written a number of popular books on astronomy. In 1995, he began to write the "Universe" column for Natural History magazine. In a column he authored for a special edition of the magazine, called "City of Stars", in 2002, Tyson popularized the term "Manhattanhenge" to describe the two days annually on which the evening sun aligns with the street grid in Manhattan, making the sunset visible along unobstructed side streets. He had coined the term in 1996, inspired by how the phenomenon recalls the sun's solstice alignment with the Stonehenge monument in England.[34] Tyson's column also influenced his work as a professor with The Great Courses.[35]
In 2001, US President George W. Bush appointed Tyson to serve on the Commission on the Future of the United States Aerospace Industry and in 2004 to serve on the President's Commission on Implementation of United States Space Exploration Policy, the latter better known as the "Moon, Mars, and Beyond" commission. Soon afterward he was awarded the NASA Distinguished Public Service Medal, the highest civilian honor bestowed by NASA.[36]
In 2004, Tyson hosted the four-part Origins miniseries of the PBS Nova series,[37] and, with Donald Goldsmith, co-authored the companion volume for this series, Origins: Fourteen Billion Years Of Cosmic Evolution.[38] He again collaborated with Goldsmith as the narrator on the documentary 400 Years of the Telescope, which premiered on PBS in April 2009.[39]
As director of the Hayden Planetarium, Tyson bucked traditional thinking in order to keep Pluto from being referred to as the ninth planet in exhibits at the center. Tyson has explained that he wanted to look at commonalities between objects, grouping the terrestrial planets together, the gas giants together, and Pluto with like objects, and to get away from simply counting the planets. He has stated on The Colbert Report, The Daily Show, and BBC Horizon that this decision has resulted in large amounts of hate mail, much of it from children.[40] In 2006, the International Astronomical Union (IAU) confirmed this assessment by changing Pluto to the dwarf planet classification.
Tyson recounted the heated online debate on the Cambridge Conference Network (CCNet), a "widely read, UK-based Internet chat group", following Benny Peiser's renewed call for reclassification of Pluto's status.[41] Peiser's entry, in which he posted articles from the AP and The Boston Globe, spawned from The New York Times's article entitled "Pluto's Not a Planet? Only in New York".[42][43]
Tyson has been vice president, president, and chairman of the board of the Planetary Society. He was also the host of the PBS program Nova ScienceNow until 2011.[44] He attended and was a speaker at the Beyond Belief: Science, Religion, Reason and Survival symposium in November 2006. In 2007, Tyson was chosen to be a regular on The History Channel's popular series The Universe.[citation needed]
In May 2009, Tyson launched a one-hour radio talk show called StarTalk, which he co-hosted with comedienne Lynne Koplitz. The show was syndicated on Sunday afternoons on KTLK AM in Los Angeles and WHFS in Washington DC. The show lasted for thirteen weeks, but was resurrected in December 2010 and then, co-hosted with comedians Chuck Nice and Leighann Lord instead of Koplitz. Guests range from colleagues in science to celebrities such as Gza, Wil Wheaton, Sarah Silverman, and Bill Maher. The show is available via the Internet through a live stream or in the form of a podcast.[45]
In April 2011, Tyson was the keynote speaker at the 93rd International Convention of the Phi Theta Kappa International Honor Society of the Two-year School. He and James Randi delivered a lecture entitled Skepticism, which related directly with the convention's theme of The Democratization of Information: Power, Peril, and Promise.[46]
In 2012, Tyson announced that he would appear in a YouTube series based on his radio show StarTalk. A premiere date for the show has not been announced, but it will be distributed on the Nerdist YouTube Channel.[47] On February 28, 2014, Tyson was a celebrity guest at the White House Student Film Festival.[48] In 2014, he revived Carl Sagan's Cosmos: A Spacetime Odyssey television series on both FOX and National Geographic. Thirteen episodes were aired in the first season, and rumors spread constantly on whether there will be a second season. Degrasse Tyson has already stated that if a second season is to be produced that he would pass the honor of host onto someone else in the science world.[49][50] On April 20th, 2015 he began hosting a late-night talk show entitled Star Talk on National Geographic Channel, where Degrasse Tyson interviews pop culture celebrities and asks them about their life experiences with science. [51]