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coronal mass ejection (CME)

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A coronal mass ejection (CME) is an eruption of plasma and magnetic field from the Sun's outer atmosphere that can expand as it travels through space and trigger geomagnetic storms upon reaching Earth.
November 12, 2025 high temporal
Explanation of a solar phenomenon that can drive geomagnetic storms.
Space
The U.S. saw vivid northern lights as far south as
A coronal mass ejection (CME) is a large burst of coronal plasma and embedded magnetic field that the Sun occasionally ejects into space.
high temporal
Definition of a space weather phenomenon that can affect the near-Earth environment.
Science
Northern lights spotted in skies across U.S. See t

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Science Space