Bob King

About Bob King

I'm a long-time amateur astronomer and member of the American Association of Variable Star Observers (AAVSO). My observing passions include everything from auroras to Z Cam stars. Every day the universe offers up something both beautiful and thought-provoking. I also write a daily astronomy blog called Astro Bob.

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Here are my most recent posts

How to Take Great Pictures of the Northern Lights

by Bob King September 12, 2014

Everybody loves pictures of the northern lights! If you’ve never tried to shoot the aurora yourself but always wanted to, here are a few tips to get you started.

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Will Aurora Strike Tonight? Here’s What to Expect

by Bob King September 12, 2014

(Scroll down for latest update) Auroras showed up as forecast last night beginning around nightfall and lasting until about 1 a.m. CDT this morning. Then the action stopped. At peak, the Kp index dinged the bell at “5” (minor geogmagnetic storm) for about 6 hours as the incoming shock from the arrival of the solar blast rattled Earth’s magnetosphere. It […]

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Clear Skies Tonight? Go Out and See the Aurora

by Bob King September 12, 2014

Talk of aurora is in the air.  Our earlier story today by Elizabeth Howell alerted you to the possibility of northern lights. Well, it’s showtime!  As of 9:30 p.m. Central Daylight Time, the aurora has been active low in the northern sky.

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Bumper Car Moonlets Crash and Crumble in Saturn’s F Ring

by Bob King September 9, 2014

Nothing stands still. Everything evolves. So why shouldn’t Saturn’s kookie, clumpy F ring put on a new face from time to time? 

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Guide to Tonight’s Big Harvest Moon

by Bob King September 8, 2014

Tonight, September 8, the Harvest Moon rises the color of a fall leaf and spills its light across deserts, forests, oceans and cities. The next night it rises only a half hour later. And the next, too. The short gap of time between successive moonrises gave farmers in the days before electricity extra light to harvest their crops, […]

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