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Bolshoi Movies Bolshoi Simulation Galaxies in Observed and Simulated Universes. Populating DM Halos with Galaxies How typical are the Milky Way Satellites? How typical are the Milky Way Satellites? Version2 The Formation of the Milky Way and its Neighbors.
Winter is coming back to Antarctica and, after a busy season for both scientists and tourists, most researchers stationed there have traveled north for the season. Among them were a Russian team that recently came within 30 meters of drilling into Lake Vostok -- a subglacial lake some 4,000 meters below the surface of the ice -- and the crew of the IceCube Neutrino Observatory, who have been burying a massive array of detectors deep in the ice. (They placed their final detector in December.) Gathered here are recent images of Antarctica, its environment, and some of the scientific work taking place there. [ 47 photos ]
Superfluid in Neutron Star's Core This composite image shows a beautiful X-ray and optical view of Cassiopeia A (Cas A), a supernova remnant located in our Galaxy about 11,000 light years away. These are the remains of a massive star that exploded about 330 years ago, as measured in Earth's time frame.
12. Still Illustrations of White Dwarf Gravitational Wave Merger Two white dwarf stars, orbiting each other in a death grip and destined to merge, may be flooding space right now with gravitational waves. These waves are ripples in space-time predicted by Einstein but never detected directly. Einstein predicted that accelerating, massive objects emit gravitational waves, which propagate through space at light speed. A passing wave will cause the Earth, Moon and all matter to bob, like a buoy on the ocean, subtly altering the distance between them. (Credit: GSFC/D.Berry)
A hypothetical star composed of free quarks with a density intermediate between that of a neutron star and a black hole . First theorized in the 1980s, it had been seriously doubted whether these objects really existed in nature. However, in April 2002, observations by the Chandra X-ray Observatory of an object known as RX J185635-375, about 450 light-years away, seemed to fit the bill.
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Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2005 March 28 A Tether in Space Credit: TSS-1 , STS-46 Crew, NASA
Curiosity Cam, Ustream.TV: THIS WEEK (NOV. 29): ENGINEERS AND TECHNICIANS ARE FINISHING SYSTEMS TESTS BETWEEN THE ROVER AND OTHER SPACECRAFT COMPONENTS (INFor information about NASA's Curiosity mission, visit: http://www.nasa.gov/msl and http://mars.jpl.nasa.gov/msl Follow the Curiosity rover on Twitter (@MarsCuriosity) and Facebook FAQs Get answers to some of the most common questions about Curiosity: http://bit.ly/h56pie FAST FACTS Mission name: Mars Science Laboratory Rover name: Curiosity rover Size: About the size of a car -- 10 feet long (not including the arm), 9 feet wide and 7 feet tall! Weight: 900 kilograms (2,000 pounds) Features: Geology lab, rocker-bogie suspension, rock-vaporizing laser and lots of cameras Mission: To search areas of Mars for past or present conditions favorable for life, and conditions capable of preserving a record of life Launch: Nov. 26, 2011, from Cape Canaveral, Fla. Arrival: August 5, 2012 PDT Length of mission on Mars: The prime mission will last one Mars year or about 23 Earth months.
Here's a cautionary story about someone who was careful with his observing gear — and still got burned. Here's a photo of Mike Lynch's 14½-inch Starmaster telescope in happier times. It's been a big draw during his frequent star parties and skywatching classes. Mike Lynch
Scientists led by Brown University are offering the first detailed explanation of the crater formed when a NASA rocket slammed into the Moon last fall and information about the composition of the lunar soil at the poles that never has been sampled. The findings are published in a set of papers in Science stemming from the successful NASA mission, called LCROSS for Lunar CRater Observing and Sensing Satellite. Peter Schultz and graduate student Brendan Hermalyn analyzed data from bits of the Moon’s surface kicked up by a NASA-engineered collision. They found unexpected complexity — and traces of silver. Credit: Mike Cohea/Brown University Mission control at NASA Ames sent the emptied upper stage of a rocket crashing into the Cabeus crater near the Moon’s south pole last October.