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Astro Bob

Sneaky auroras, ISS sunsets and awesome new Mars landing videos

20 Aug 2012, 17:16 UTC
Sneaky auroras, ISS sunsets and awesome new Mars landing videos
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Last night the aurora paid an unexpected visit. A series of beautiful parallel rays stood tall in the northern sky between 10 and 10:30 p.m. (CDT). The display was brief and settled back into a quiet, greenish glow near the … Continue reading →

Aurora rays, all lined up in a row, reach toward the Big Dipper (upper left) about 10:15 p.m. last night. Details: 20mm lens at f/2.8, ISO 1600 and 30-second exposure. Photo: Bob King
Last night the aurora paid an unexpected visit. A series of beautiful parallel rays stood tall in the northern sky between 10 and 10:30 p.m. (CDT). The display was brief and settled back into a quiet, greenish glow near the horizon for the remainder of the night. I was all ready to send out a tweet from my smartphone but unfortunately didn’t have service from out in the bog country.
By 10:45 p.m. the aurora had settled into a green-tinged arc low in the northern sky. Photo: Bob King
The space weather forecast had called for a slight chance of auroras from the effects of a coronal hole, an opening in the sun’s magnetic field that allows high speed particles to stream directly ...

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