Science: Physicists at an ultrasensitive cosmic-ray observatory in Argentina say puzzled theorists can stop trying to explain ultrahigh-energy particles that other instruments had spotted streaming from outer space: the particles weren’t there.
An ultracold atomic gas can sync into a single quantum state. Researchers uncovered a speed limit for the process that has implications for quantum computing and the evolution of the early universe.
January 09, 2026 02:51 PM
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