PICK OF THE WEEK
 
Pick of The Week
 
 

Classic CME Observed (November 25, 2009)


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The STEREO Ahead spacecraft observed a "classically shaped", bulbous coronal mass ejection (CME) on Nov. 21, 2009. As the bright, outer edge of the CME expands outwards, it almost looks like the Sun is blowing up a balloon. The first CME is followed by smaller CME events that blow even more particles out to the left and the right. In this coronagraph, the Sun is represented by the white circle. The black occulting disk blocks out the Sun and part of its inner atmosphere or corona to reveal faint structures beyond the Sun.

 

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