News tagged with dark matter

The case for co-decaying dark matter

(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. ...

dateDec 05, 2016 in General Physics feature
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Colliding galaxy clusters

Galaxy clusters contain a few to thousands of galaxies and are the largest bound structures in the universe. Most galaxies are members of a cluster. Our Milky Way, for example, is a member of the "Local Group," a set of about ...

dateDec 05, 2016 in Astronomy
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NA64 hunts the mysterious dark photon

One of the biggest puzzles in physics is that eighty-five percent of the matter in our universe is "dark": it does not interact with the photons of the conventional electromagnetic force and is therefore invisible to our ...

dateNov 25, 2016 in General Physics
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New theory of gravity might explain dark matter

A new theory of gravity might explain the curious motions of stars in galaxies. Emergent gravity, as the new theory is called, predicts the exact same deviation of motions that is usually explained by invoking dark matter. ...

dateNov 08, 2016 in General Physics
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