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Trio of Tempests

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Three distinct active regions with towering arches above them rotated into view over a three-day period (Sept. 24-26, 2017). In extreme ultraviolet light, charged particles that are spinning along the ever-changing magnetic field lines above the active regions make the lines visible. To give some sense of scale, the largest arches rose up many times the size of Earth. Credit: Solar Dynamics Observatory, NASA.

Search Tag(s): aia, 171, active regions, loops, magnetic field lines

 

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