A University of Utah-led team discovered a "hypervelocity star" that is the closest, second-brightest and among the largest of 20 found so far. Speeding at more than 1 million mph, the star may provide clues about the supermassive ...
Astronomy
May 7, 2014
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Astronomers have discovered a distant quasar illuminating a vast nebula of diffuse gas, revealing for the first time part of the network of filaments thought to connect galaxies in a cosmic web. Researchers at the University ...
Astronomy
Jan 19, 2014
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(Phys.org) —One of the most powerful tools for understanding the formation and evolution of galaxies has been the use of computer simulations—numerical models of astrophysical processes run on supercomputers and compared ...
Astronomy
Dec 10, 2013
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(Phys.org) —The least massive galaxy in the known universe has been measured by UC Irvine scientists, clocking in at just 1,000 or so stars with a bit of dark matter holding them together.
Astronomy
Jun 10, 2013
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Could it be that dark matter "halos"—the huge, invisible cocoons of mass that envelop entire galaxies and account for most of the matter in the universe—aren't completely dark after all but contain a small number of stars? ...
Astronomy
Oct 24, 2012
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(Phys.org) -- New evidence from NASA's Chandra X-ray Observatory challenges prevailing ideas about how black holes grow in the centers of galaxies. Astronomers long have thought that a supermassive black hole and the bulge ...
Astronomy
Jun 11, 2012
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(PhysOrg.com) -- The Bolshoi supercomputer simulation, the most accurate and detailed large cosmological simulation run to date, gives physicists and astronomers a powerful new tool for understanding such cosmic mysteries ...
Astronomy
Sep 29, 2011
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Globular clusters are generally some of the oldest structures in our galaxy. Many of the most famous ones formed around the same time as our galaxy, some 13 billion years ago. However, some are distinctly younger. While many ...
Astronomy
Sep 23, 2011
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(PhysOrg.com) -- One of the biggest unsolved problems in astrophysics is that galaxies and galaxy clusters rotate faster than expected, given the amount of existing baryonic (normal) matter. The fast orbits require a larger ...
(PhysOrg.com) -- Astronomers from the Scottish Universities Physics Alliance (SUPA) have produced a completely new catalogue of ~15,000 groups of galaxies that gives a new insight into dark matter, the material of unknown ...
Astronomy
Apr 21, 2011
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