Dark matter could make our galaxy's innermost stars immortal
Stars near the center of our galaxy are acting kind of weird. Dark matter may be the explanation.
Stars near the center of our galaxy are acting kind of weird. Dark matter may be the explanation.
When astrophysicists look at the gamma-ray glow from a galaxy outside our own, all they typically see is a small spot because the galaxy is extremely far away. So, when a galaxy appears as an extended blob, something extraordinary ...
Astronomy
Oct 16, 2018
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Researchers at the Tata Institute of Fundamental Research in Mumbai have proposed a theory that predicts how dark matter may be annihilating much more rapidly in the Milky Way, than in smaller or larger galaxies and the early ...
Astronomy
Jun 23, 2017
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In an abandoned gold mine one mile beneath Lead, South Dakota, the cosmos quiets down enough to potentially hear the faint whispers of the universe's most elusive material—dark matter.
General Physics
Mar 9, 2017
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(Phys.org)—There isn't as much dark matter around today as there used to be. According to one of the most popular models of dark matter, the universe contained much more dark matter early on when the temperature was hotter. ...
A newly discovered dwarf galaxy orbiting our own Milky Way has offered up a surprise—it appears to be radiating gamma rays, according to an analysis by physicists at Carnegie Mellon, Brown, and Cambridge universities. The ...
Astronomy
Mar 10, 2015
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The Planck collaboration, which notably includes the CNRS, CEA, CNES and several French universities, has disclosed, at a conference in Ferrara, Italy, the results of four years of observations from the ESA's Planck satellite. ...
General Physics
Dec 5, 2014
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(Phys.org) —A new study of gamma-ray light from the center of our galaxy makes the strongest case to date that some of this emission may arise from dark matter, an unknown substance making up most of the material universe. ...
Astronomy
Apr 3, 2014
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(Phys.org) —Determining the mass of dark matter particles requires accounting for several factors, one of which is the velocity distribution of the particles. Most current estimates of dark matter mass involve assumptions ...
(Phys.org) —Astrophysicists Dan Hooper and Tracy Slatyer of Fermi National Accelerator Laboratory, and Princeton University respectively, have written a paper—and uploaded it to the preprint server arXiv—in which they ...