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Data acquired February 28, 2013 720 x 720 JPEG
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The Sun has been at a lull when many were expecting fierce storms and incessant sunspot activity. Could this be a double-peaked maximum?
NASA images courtesy Solar Dynamics Observatory and Helioseismic and Magnetic Imager science teams. Sunspot number data from the NOAA National Geophysical Data Center. NASA animation by Robert Simmon. Caption adapted from a story by Tony Phillips, Science@NASA.
Published March 6, 2013 Data acquired February 28, 2013