Solar Composite
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Solar Composite

April 25, 2013
This image is a composite of 25 separate images spanning the period of April 16, 2012, to April 15, 2013. It uses the SDO AIA wavelength of 171 angstroms and reveals the zones on the sun where active regions are most common during this part of the solar cycle.

Credit: NASA/SDO/AIA/S. Wiessinger

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