When an active region rotated into a profile view, SDO was
able to capture the magnificent loops arching above an active region (Sept.
28-29, 2016). Active region are areas of strong magnetic fields. The magnetic
field lines above these regions are illuminated by charged particles spiraling
along them. The images were taken in a wavelength of extreme ultraviolet light.
The video covers 12 hours of activity. The Earth was inset to give a sense of
the scale of these towering arches.
Credit: Solar Dynamics Observatory, NASA.
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