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Home The locations of STEREO–A, STEREO–B and SDO relative to the sun and Earth in 2011. (Credit: NRL ) The locations of STEREO–A, STEREO–B and SDO relative to the sun and Earth in 2011. (Credit: NRL )

The locations of STEREO–A, STEREO–B and SDO relative to the sun and Earth in 2011. (Credit: NRL )

The locations of STEREO–A, STEREO–B and SDO relative to the sun and Earth in 2011. (Credit: NRL )

The locations of STEREO–A, STEREO–B and SDO relative to the sun and Earth in 2011. (Credit: NRL )

The changes of a coronal cell region as solar rotation carries it across the solar disk as seen with NASA’s STEREO-B spacecraft. The camera is fixed on the region (panning with it) and shows the plumes changing to cells and back to plumes again — based on the observatory’s perspective — during the interval June 7th-14th, 2011. (Credit: NASA/STEREO/NRL)
The top images show coronal cells as viewed from above by STEREO-B (on the left) and SDO (on the right). Their diameters are about 18,000 miles. The bottom images show the same region as viewed almost simultaneously from the sides by STEREO-B (on the left) and SDO (on the right). The heads of the black and white arrows mark identical points on the sun as seen from STEREO-B and SDO, respectively. (Credit: NASA/STEREO/SDO/NRL)

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