Coronal Mass Ejections by NOAA Space Weather Prediction Center
= Coronal Mass Ejections by NOAA Space Weather Prediction Center
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https://www.spaceweather.gov/phenomena/coronal-mass-ejections
Operational agency technical description: magnetized coronal plasma expulsions; coronagraph analysis of size, direction and projected speed; LASCO ranges and in-situ plasma/magnetic signatures. No live-event values used. Instrument description: https://soho.nascom.nasa.gov/about/instruments.html .