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Sunspots AR3664 and AR3663 have been erupting with X- and M-class solar flares.
Both sunspots are Earth-facing and could potentially deliver a solar storm.

NASA's Solar Dynamics Observatory captured the fireworks.

Credit: Space.com | footage courtesy: NASA / SDO and the AIA, EVE, and HMI science teams / HelioViewer| edited by Steve Spaleta

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