Sunspot activity. The Solar Dynamics Observatory (SDO) caught this dramatic image of sunspot 1302 on 28 September 2011 with the Advanced Imaging Assembly (AIA). AIA takes images in 10 different light wavelengths. This one is shown in 171 Angstroms, typically colorized in yellow on SDO images. The thin, whispy lines are called coronal loops and they are made of hot solar material – charged particles called plasma – that collect around invisible magnetic fields looping up from the sun. An optimised and digitally enhanced version of an NASA image / credit NASA / Solar Dynamics Observatory

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Size: 4164px × 4000px
Location: The Sun
Photo credit: © NASA / digitaleye / Alamy / Afripics
License: Licensed
Model Released: No

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