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Neil deGrasse Tyson

Neil deGrasse Tyson was born and raised in New York City where he was educated in the public schools clear through his graduation from the Bronx High School of Science. Tyson went on to earn his BA in Physics from Harvard and his PhD in Astrophysics from Columbia.Tyson's professional research interests are broad, but include star formation, exploding stars, dwarf galaxies, and the structure of our Milky Way. Tyson obtains his data from the Hubble Space Telescope, as well as from telescopes in California, New Mexico, Arizona, and in the Andes Mountains of Chile.In 2001, Tyson was appointed by President Bush to serve on a 12-member commission that studied the Future of the US Aerospace Industry. The final report was published in 2002 and contained recommendations (for Congress and for the major agencies of the government) that would promote a thriving future of transportation, space exploration, and national security.In 2004, Tyson was once again appointed by President Bush to serve on a 9-member commission on the Implementation of the United States Space Exploration Policy, dubbed the Moon, Mars, and Beyond commission. This group navigated a path by which the new space vision can become a successful part of the American agenda. And in 2006, the head of NASA appointed Tyson to serve on its prestigious Advisory Council, which will help guide NASA through its perennial need to fit its ambitious vision into its restricted budget.In addition to dozens of professional publications, Dr. Tyson has written, and continues to write for the public. He is a monthly essayist for Natural History magazine under the title Universe. And among Tyson's eight books is his memoir The Sky is Not the Limit: Adventures of an Urban Astrophysicist; and Origins: Fourteen Billion Years of Cosmic Evolution, co-written with Donald Goldsmith. Origins is the companion book to the PBS-NOVA 4-part mini-series Origins, in which Tyson serves as on-camera host. The program premiered on September 28 and 29, 2004. And beginning in the fall of 2006, Tyson appears as the on-camera host of PBS-NOVA's spinoff program NOVA ScienceNow, which is an accessible look at the frontier of all the science that shapes the understanding of our place in the universe.Tyson's latest two books are the playful and informative Death By Black Hole and Other Cosmic Quandaries, which was a New York Times bestseller, and The Pluto Files: The Rise and Fall of America's Favorite Planet, chronicling his experience at the center of the controversy over Pluto's planetary status.Tyson is the recipient of nine honorary doctorates and the NASA Distinguished Public Service Medal. His contributions to the public appreciation of the cosmos have been recognized by the International Astronomical Union in their official naming of asteroid 13123 Tyson. On the lighter side, Tyson was voted Sexiest Astrophysicist Alive by People Magazine in 2000.Tyson is the first occupant of the Frederick P. Rose Directorship of the Hayden Planetarium. Tyson lives in New York City with his wife and two children.

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Muhammadje citiraoпре 2 године
Quarks are quirky beasts. Unlike protons, each with an electric charge of +1, and electrons, with a charge of –1, quarks have fractional charges that come in thirds. And you’ll never catch a quark all by itself; it will always be clutching other quarks nearby. In fact, the force that keeps two (or more) of them together actually grows stronger the more you separate them—as if they were attached by some sort of subnuclear rubber band. Separate the quarks enough, the rubber band snaps and the stored energy summons E = mc2 to create a new quark at each end, leaving you back where you started
Muhammadje citiraoпре 2 године
Zwicky studied the movement of individual galaxies within a titanic cluster of them, located far beyond the local stars of the Milky Way that trace out the constellation Coma Berenices (the “hair of Berenice,” an Egyptian queen in antiquity). The Coma cluster, as we call it, is an isolated and richly populated ensemble of galaxies about 300 million light-years from Earth.
Muhammadje citiraoпре 2 године
These are ordinary dangers. From the department of exotic happenings, intergalactic space is regularly pierced by super-duper high-energy, fast-moving, charged, subatomic particles. We call them cosmic rays. The highest-energy particles among them have a hundred million times the energy that can be generated in the world’s largest particle accelerators. Their

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