The so-called self-interacting dark matter theory helps explain why NGC 1052-DF2 and NGC 1052-DF4, a pair of ultra-diffuse galaxies located approximately 65 million light-years away the constellation of Cetus, contain little dark matter. The NASA/ESA Hubble Space Telescope took this image of NGC 1052-DF2 on November 16, 2017. Image credit: …
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A team of paleontologists and mechanical and biomedical engineers has compared CT scans of the fossilized bones of hadrosaurs and other dinosaurs with bones of extinct and living mammals and found that the dinosaur trabecular bone architecture was uniquely capable of supporting large weights (up to 47,000 kg) and different …
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Yahoo secretly scanned its users emails at the behest of a U.S. government agency — and now it wants the government to explain why. In a letter to James Clapper, the Director of National Intelligence, Yahoo carefully avoids admitting that it scanned users’ email or that it received an order …
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