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The Bortle Dark-Sky Scale ranks the darkness of the night sky on a scale from 1 to 9.

Twice a year, millions of birds migrate right over our heads. From about April 1 to May 31 and then again from about August 15 to November 15, birds wing their way from their winter homes to their northern breeding grounds and back again.

I didn’t join DarkSky PA expecting that it would lead me to seeing some of the prettiest fireflies on the planet. That was an added bonus.

A couple of nights ago, we drove out to where the Appalachian Trail crosses the Cumberland Valley near Boiling Springs, PA. We pulled the truck over right at the AT sign and got out to admire the night sky.

I got very excited when I read that Teton County in Wyoming became the first county in the world to be recognized officially as an International Dark Sky Community.

Spring and Autumn offer unique opportunities for nighttime activities without heavy layers. As leaves change and birds migrate, it's the perfect time to explore the outdoors at night.