Solar flares are hotter than previously thought

By Nell Greenfieldboyce

Published September 7, 2025 at 9:01 AM EDT

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.

Nell Greenfieldboyce

Nell Greenfieldboyce is a NPR science correspondent.

See stories by Nell Greenfieldboyce

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