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The Universe's Most Powerful Cosmic Rays May Finally Be Explained

Summary by Science Alert
Somewhere in our galaxy are engines capable of driving atomic fragments to velocities that come within a whisker of lightspeed.

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A cosmic enigma of a century Since the 1930s, scientists have been detecting particles coming from the very bottom of space: cosmic rays. Composed mainly of protons, they constantly bomb the Earth. But among these ordinary particles, some are exceptionally energetic. Their power exceeds the petaelectronvolt (PeV), or one million billion electronvolts. By comparison, the world's largest particle accelerator, the LHC, does not exceed 0.01 PeV. For…

World, Jun 01, 2025 (ATB Digital).- A team of Japanese researchers has managed to capture for the first time the exact moment when an Earth gamma ray flash (TGF) or “dark ray” occurs, just before two electric currents collide to form a conventional ray. The discovery, published in Science Advances and led by scientists at Osaka University, solves a mystery that has intrigued researchers for almost three decades: how exactly electrical storms gen…

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Science Alert broke the news in Australia on Saturday, May 31, 2025.
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