Oct. 23, 2011 -- The image above shows the current conditions of the quiet corona and upper transition region of the sun, as taken by the NASA Solar Dynamics Observatory (SDO)'s AIA instrument at 171 Angstrom. Zooming in on the left side of the image shows a devilish-looking filament:
PHOTOS: Ten Mind-Blowing Solar Views from the SDO
Across the surface the sun launched several solar flares:
On and over the west limb of the sun a filament erupted and a long duration M1 flare formed loops after the eruption.
BLOG: Epic Solar Flare Pops Sun's Magnetic Cork
IMAGES: The quiet corona and upper transition region of the sun on Oct. 22, 2011. (NASA Solar Dynamics Observatory)
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