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Hubble Unmasks Ghost Galaxies
July 10, 2012 — Astronomers are studying some of the smallest and faintest galaxies in our cosmic neighborhood. These galaxies are fossils of the early Universe: They have barely changed for 13 billion years. The ... > full story -
Belching Black Hole Proves a Biggie: First Known 'Middleweight' Black Hole
July 9, 2012 — Astronomers have found the first known "middleweight" black hole. Before it was found, astronomers had good evidence for only supermassive black holes -- ones a million to a billion times the mass of ... > full story -
'Impossible’ Binary Stars Discovered
July 5, 2012 — Astronomers have discovered four pairs of stars that orbit each other, in less than 4 hours. Until now it was thought that such close-in binary stars could not ... > full story -
NuSTAR Space Telescope Opens Its X-Ray Eyes
June 28, 2012 — NASA's Nuclear Spectroscopic Telescope Array, or NuSTAR, has snapped its first test images of the sizzling high-energy X-ray universe. The observatory, launched June 13, is the first space telescope ... > full story -
Multiple Mergers Generate Ultraluminous Infrared Galaxy
June 29, 2012 — Ultraluminous infrared galaxies are the most luminous class of galaxies in the relatively near or local Universe. Most of their energy output is in the infrared range, suggesting that they contain a ... > full story -
Milky Way Struck 100 Million Years Ago, Still Rings Like a Bell
June 28, 2012 — Astronomers have discovered evidence that our Milky Way had an encounter with a small galaxy or massive dark matter structure perhaps as recently as 100 million years ago, and as a result of that ... > full story -
ALMA Reveals Constituent of a Galaxy at 12.4 Billion Light-Years Away
June 27, 2012 — How and when did galaxies with hundreds of billions of stars form and evolve? The sun, which is the center of the solar system in which we live, is also only one of the countless stars contained ... > full story -
Gravitational Lensing: Astronomers Spot Rare Arc from Hefty Galaxy Cluster
June 26, 2012 — Seeing is believing, except when you don't believe what you see. Astronomers using NASA's Hubble Space Telescope have found a puzzling arc of light behind an extremely massive cluster of galaxies ... > full story -
Reaching, Researching Between Stars: Astronomers Use Lonestar Supercomputer to Explore Role of Dark Matter in Galaxy Formation
June 26, 2012 — A new study reveals that dark matter is more distributed than predictions previously stated. Researchers used the TACC Lonestar supercomputer to simulate thousands of galaxy models based on the ... > full story -
Most Quasars Live on Snacks, Not Large Meals
June 19, 2012 — A census of 30 quasar host galaxies, conducted with the Hubble Space Telescope and Spitzer Space Telescope, has found that black holes in the early universe may have only needed a few snacks, such as ... > full story
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