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Rare Solar Flare Caused Radiation in Earth's Atmosphere to Spike to Highest Levels in Nearly 20 Years, Researchers Say

Radiation at aviation altitudes peaked at ten times normal during the powerful solar flare, marking the highest levels recorded since 2006, researchers said.

Summary by Space
Levels of potentially dangerous cosmic radiation in Earth's atmosphere rose to a two-decade high in November after a rare solar super-flare pummeled the planet with high-speed particles from the sun.

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Gizmodo broke the news in United States on Wednesday, December 3, 2025.
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