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AstronomyStars may keep spinning fast, long into old age
NASA’s TESS telescope has spotted an old star that spins too fast for theory to explain, suggesting that stars may have a magnetic midlife crisis.
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AstronomyA 3-D map of stars reveals the Milky Way’s warped shape
Our galaxy flaunts its curves in a chart of thousands of stars called Cepheids.
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AnimalsThere’s more to pufferfish than that goofy spiked balloon
Three odd things about pufferfishes: how they mate, how they bite and what’s up with no fish scales?
By Susan Milius -
PhysicsScientists seek materials that defy friction at the atomic level
Scientists investigate superslippery materials and other unusual friction feats.