Coronal mass ejections: What are they and how do they form? - Space.com

These colossal clouds of plasma can wreak havoc with power grids and satellites, but can also trigger stunning aurora displays.

Coronal mass ejections (CMEs) are large expulsions of plasma and magnetic field from the sun's atmosphere — the corona.  Compared to solar flares — bursts of electromagnetic radiation that travel at… [+12947 chars]

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