Aurora Alert Tonight Dec. 17 / Review: Cosmic-Watch App

Particles streaming from solar blowhole and the side-effects of a Dec. 15 blast will combine to up our chances of seeing the northern lights the next two nights. Spaceweather experts predict minor storming (Kp=5) starting this evening around (updated) 6 p.m. Central Time and continuing through about midnight. “Minor” usually means that observers in the…
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Holey Sun Could Fire Up Auroras Tonight

In one of the Winnie the Pooh stories I read to my kids, the lovable bear carries around a bag or sock with a hole in it. One day, he and Piglet get lost in the forest, but thanks to the the hole, the crumbs lead them back to safety. The sun’s like that. It…
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Changing Leaves, Slanting Sun, Falls Begins Today

At 3:02 p.m. Central time today falls begins. The moment is also called the autumnal equinox from the Latin “equal night” — on the first day of fall, day and night are equal at 12 hours apiece.  Like the Earth, the sky is divided into hemispheres, north and south. There’s even an equator up there…
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Sunspot’s Parting Gift — A Spectacular Loop Prominence / Aldebaran Goes Bye-Bye

What a sunspot show it was. The huge group, AR 2673, visible with the naked eye, produced an X9.3 flare on September 6th, the most powerful recorded since 2005. For the next few days, it quieted down a bit and then went ballistic again. At 11:06 a.m. Central time Sunday, the region erupted with at the…
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Solar Storm Headed Our Way / Aurora Alert Tonight Sept. 6-7

The large sunspot group, active region 2673, that grew in great haste over the weekend, has proceeded to shoot out flares like a 4th of July fireworks display. Seven moderate or M-class flares erupted Monday and five more on Tuesday. During one of Monday’s flares, the spot group launched a CME or coronal mass ejection toward…
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