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Composite CME


This composite combines images from two instruments on two different solar study spacecraft to show two views of a coronal mass ejection as it blasts into space (Aug. 7, 2010). The SDO image of the Sun itself, taken in extreme UV light, shows the active region that was the source of the blast (whiter area, left of center). The larger background image, taken at about the same time, captures the front edge of he expanding particle cloud heading to the left. This coronagraph image was processed to highlight the difference between one frame and the next, taken about 15 minutes later. A coronagraph blocks out the Sun with an occulting disk to reveal the much fainter structures in the Sun's atmosphere. The red Sun was enlarged about 50% to fill that disk.

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