Black-hole 'particle accelerators' are causing mysterious cosmic rays to rain down on Earth at nearly the speed of light
A study provides crucial clues about how cosmic objects send accelerated particles through space. Jets coming from quasars and supernovae can send...
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Mobulas, an Aquatic Wonder of the Gulf of California, Are Disappearing
Conservationists are determined to protect the magnificent rays of the Pacific—whether that’s tracking them with acoustic tags or flying drones,...
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