A BIG DANGEROUS SUNSPOT: One of the biggest sunspots in years has just rotated over the sun’s northeastern limb. AR3112 has a mixed-polarity magnetic field that harbors energy for strong X-class solar flares. The appearance of this dangerous sunspot could herald two weeks of high solar activity as it transits the Earth-facing side of the sun. Full story @ Spaceweather.com

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Above: A white-light photo of sunspot group AR3112 is inset atop a magnetic map of the sun from NASA’s Solar Dynamics Observatory.