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After a little break (of 25 years or so) Bob King is celebrating his retirement with a return to The North 103.3's airwaves!After almost 40 years with the Duluth News Tribune, Bob is now retired. But scratch a print guy and you'll find a radio guy; King and then-UMD Planetarium Director Glen Langhorst hosted Startalk on KUMD for several years in the early '90s.Listen for Astro Bob every other Tuesday at 8am on Northland Morning.

Astro Bob's Backyard Astronomy: Off-Planet Aurora and the Changing Moon

Close up of a half-moon against a dark night sky
Bruno Casals [via Flickr]

Aurora has been popping up rather frequently as of late here on planet Earth, but it's also showing up on other planets too.

All other planets in our solar system - with the exception of Mercury - experience Aurora in their own way. Though they would be invisible to the eyes of humans, Mars has Aurora. However, Martian Aurora doesn't gravitate to poles. "Essentially particles from the sun just bombard the entire atmosphere of Mars," says Bob King. Ultraviolet vision is a requirement for viewing.

Back here on Earth, the moon is approaching its midway point between full moon and new moon. Look for a perfect halfmoon this Friday night

You can hear Astro Bob's Backyard Astronomy every other Tuesday at 8:20am on Northland Morning.

Luke Moravec is the host for Northland Morning on The North 103.3. He’s also a local actor, musician and writer. He loves puzzles, riddles and fun mysteries.
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