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coronal mass ejection
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significant release of plasma and magnetic field from the solar corona
~33 min read
Encyclopedic overview
When observed in white-light coronagraph imagery, CMEs sometimes resemble a light bulb, possessing a bright bulb-like outer shell surrounding a dark void and compact inner structure.
A coronal mass ejection (CME) is a significant ejection of plasma mass from the Sun's corona into the heliosphere. CMEs are often associated with solar flares and other forms of solar activity, but a broadly accepted theoretical understanding of these relationships has not been established.
Excerpted from Wikipedia’s “coronal mass ejection” article, available under the CC BY-SA 4.0 licence.