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AstronomyHow James Webb Space Telescope data have already revealed surprises
A distant galaxy cluster’s violent past and the onset of star formation in the more remote universe lie buried in the observatory’s first image.
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Paleontology50 years ago, the dinosaurs’ demise was still a mystery
In 1972, scientists blamed dinosaur biology for the reptiles’ demise. Years later, researchers ID’d the real killer: an apocalyptic asteroid.
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PaleontologyMammal ancestors’ shrinking inner ears may reveal when warm-bloodedness arose
An abrupt shift in inner ear shape of mammal ancestors 233 million years ago, during a time of climate swings, points to evolution of warm-bloodedness.