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Solar flares are hotter than previously thought

By Nell Greenfieldboyce
Published September 7, 2025 at 8:01 AM CDT

Solar flares can be many times the size of Earth and can damage things like satellites. A new study suggests that eruptions from the sun can be even hotter than researchers thought.

Copyright 2025 NPR
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Nell Greenfieldboyce
Nell Greenfieldboyce is a NPR science correspondent.
See stories by Nell Greenfieldboyce
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