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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: Illusions of Space

 Noctilucent clouds over a darkened lake on June 27, 2021
Bob King

Between stars that look close together but aren't, and bits of the moon that appear to be missing, the dark skies are filled with illusions.

Eagle eye viewers might notice an odd "bridge" of sorts on the edge of the moon that appears to stretch out into empty space. This illusion is caused by a large crater coupled with lighting from the sun. "The sunlight is skimming the edge of this crater," says Bob Kings. As a result, only the rim of the crater is lit while the valley remains in darkness.

The Beehive Cluster and the planet Mars will be close together in the sky, but only according to our point of view. The Beehive star cluster is 610 lightyears away. "There's a great deal of space between them," says King.

Throughout the month of June, fifty miles overhead, "pale-blue tendrils" can be seen an hour or two after sunset. These clouds are made of meteorite dust and ice crystals. The sunlight washes out the red color leaving trails of blue in the sky.

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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