Important notice about STEREO Behind
Widely Blossoming CME
STEREO (Ahead) spacecraft caught this bright and blossoming coronal mass ejection (CME) as it blasted out into space over about one day (Sept. 10-11, 2012). In these coronagraphs the Sun (represented by the white circle) is blocked out by the dark disk so that the fainter features in the corona can be observed. It's like a man-made eclipse. CME's carry over a billion tons of particles into space at a million miles per hour. This larger event was followed by a smaller CME that heads up and to the left.
Last Revised: March 19, 2018 15:00:39 UTC
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