An Active Region of the Sun
Here you can see a very active region of the Sun, photographed in UV light. These loops are associated with magnetic fields on and under the Sun's surface. Many of these loops last for days or weeks, but most change quite rapidly.
Credit:
NASA/Solar Dynamics Observatory
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The EU-UNAWE website was produced by funding from the European Community's Seventh Framework Programme ([FP7/2007-2013]) under grant agreement n° 263325