Dark matter may be massive: Theorists


Instead of WIMPS or axions, dark matter may be made of macroscopic objects as small as a few ounces up to the size of a good asteroid, and probably as dense as a neutron star…

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Physicists propose search for fourth neutrino


Physicists know that neutrinos (and antineutrinos) come in three flavors: electron, muon, and tau. In several experiments, researchers have detected each of the neutrino flavors and even watched them “oscillate” back and forth between flavors….

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