Credit: NASA/SDO

Big Sunspot Group Heats Up

(Update: The aurora’s active tonight. Not a big storm, but if you live in the northern U.S. and the sky’s clear, head out for a look. A G1 storm (Kp=5) is underway with arcs and faint rays low in the northern sky. The activity, spawned by a coronal mass ejection (CME) from the sun earlier…
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Jupiter aurora Hubble FEA

Hubble Makes Movies Of Jupiter’s Giant Auroras

Hubble Space Telescope time-lapse of auroras photographed in ultraviolet light over Jupiter’s north polar region on May 19, 2016. The “hot spot” at right is caused by material from Io accelerated toward Jupiter by electric and magnetic fields. Credit: NASA, ESA, J. Nichols It’s been pretty quiet here at mid-latitudes the past month as far as auroras go.…
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Aurora June5_6_2016 A_S_FEA

Lazy Waves Of Aurora Lap Northern Sky Tonight

Just got back from a little auroral adventure. The moderate storm we were expecting last night is happening tonight! Right now. I saw a lot of small plumes bloom and fade over the northern horizon around midnight, but every 15 minutes or so, one of them would slowly unfurl like a fiddlehead fern and reach all…
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Venus SOHO C2 LASCO June 4_FEA

Venus — Going, Going, Gone!

Don’t look now — and I really mean that — but Venus is about to be occulted by the sun. Today the brightest planet sits invisibly one sun-diameter to the west of the sun. No one would even attempt to see an object that close to our daytime star lest they wish to flirt with disaster.…
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View to the east showing lots of active rays or pillars. My wide-angle lens was only wide enough to cover 1/3 of the display at a time. Credit: Bob King

Auroras Expected Sat. Night / AZ Fireball Update

Get ready for stormy weather. Zillions of sub-microscopic electrons and protons from a solar coronal hole are expected to impact Earth’s magnetic domain beginning sometime tomorrow afternoon. Space weather forecasters are calling for moderate storm conditions through about 10 p.m. (CDT) Saturday evening followed by a return to minor storm from 10 till 1 a.m. Based…
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