August 7, 2014
Mohenjo
Science
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When astronomers detected a strange signal in a massive galaxy cluster millions of light years from Earth, they knew they had stumbled upon something big.
“I couldn’t believe my eyes,” Esra Bulbul, of the Harvard Center for Astrophysics, said in a written statement. “What we found, at first glance, could not be explained by known physics.”
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March 12, 2014
Mohenjo
Science
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A thin disk of dark matter running through the Galaxy might be behind the large meteorite strikes that are thought to be responsible for some of Earth’s mass extinctions, including that of the dinosaurs, two theoretical physicists have proposed.
The model is based on a hypothetical form of dark matter described by the authors and their collaborators last year as a means to solve a separate cosmic conundrum. The existence of such a ‘dark disk’ could be tested soon by astronomical observations.
Mario Livio, an astrophysicist at the Space Telescope Science Institute in Baltimore, Maryland, who was not involved in the research, says that the latest idea, which brings together two speculative and very different theories, is “very interesting”, even if the evidence supporting it is far from compelling.
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April 16, 2013
Mohenjo
Science
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Hints of dark matter, the mysterious stuff that makes up perhaps 85 percent of the matter in the universe, may have been observed by scientists.
But researchers are far from saying they’ve discovered the source of dark matter.
“We’re not claiming anything,” warned Blas Cabrera, a Stanford University physicist speaking here today (April 15) at a meeting of the American Physical Society. [Explaining Dark Matter (Infographic)]
The new results come from the Super Cryogenic Dark Matter Search (SuperCDMS), which takes place deep underground in the Soudan mine in northern Minnesota.
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The Cryogenic Dark Matter Search experiment (SuperCDMS) uses five towers of dark matter detectors like the ones shown here.
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April 4, 2013
Mohenjo
Science
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It is one of the cosmos’ most mysterious unsolved cases: dark matter. It is supposedly what holds the universe together. We can’t see it, but scientists are pretty sure it’s out there.
Led by a dogged, Nobel Prize-winning gumshoe who has spent 18 years on the case, scientists put a $2 billion detector aboard the International Space Station to try to track down the stuff. And after two years, the first evidence came in Wednesday: tantalizing cosmic footprints that seem to have been left by dark matter.
But the evidence isn’t enough to declare the case closed. The footprints could have come from another, more conventional suspect: a pulsar, or a rotating, radiation-emitting star.
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http://www.huffingtonpost.com/2013/04/03/iss-dark-matter-found_n_3009408.html?ref=topbar
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