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Neutron stars are the unimaginably dense remnants of collapsed giant stars. They get their name because the conditions inside are so fierce that atoms are smashed apart into a soup of protons, electrons, and, yes, neutrons. And now we have the first direct evidence that neutron stars are forming superfluids of neutrons - a totally bizarre state of matter that can't even be created in Earth laboratories. More »
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Muons, neutrinos, supersymmetric partners, the infamous Higgs boson - with so many different subatomic particles flying about, it's no wonder theoretical physics can be so confusing. That's why we made this (reasonably) simple guide to all the different elementary particles. More »
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Need to get rid of a bunch of space trash, or jumpstart a wormhole? Now you can, at least if you can get near enough to a neutron star when it's heading into explosion mode. Using NASA's Rossi X-ray Timing Explorer (RXTE), some astronomers have made an extraordinary breakthrough: they've discovered how to predict when neutron stars will unleash massive explosions. What this means, in essence, is that stellar explosions can be compared to Old Faithful, the geyser in Yellowstone Park that erupts at precise times. More »
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