coronal mass ejection

Alternative definitions (1), class: vernacular (0)
Term: coronal mass ejection

An outflow of plasma from or through the solar corona. CMEs are often, but not always, associated with erupting prominences, disappearing solar filaments, and/or flares.  CMEs vary widely in structure, density, and velocity.  Large and fast CMEs can approach densities of 1016 g and velocities of 2000 km/s.  Earth impacting CMEs can result in significant geomagnetic storms.

Created 2023.04.16
Last Modified 2023.04.16
Contributed by Ryan McGranaghan