Come late June, nights get humid. As the air cools, especially in low spots, water condenses to form ground fog. The cotton candy-like draperies over the fields at dusk are simply magical. Sometimes the fog hovers mere feet above the ground. On a few lucky nights, I’ve driven home through clear tunnels with the fog tearing away just above the roof of the car. Simply amazing.
Last night while I was out following fireflies, a fog slowly enveloped a nearby field shortly after moonrise. Beams of moonlight are normally invisible in clear air, but the fog gave them substance. Walking past a tree, I came to a sudden halt. Branches and leaves splintered the lunar light into a spectacular rayed corona that shifted kaleidoscopically every step I took.
Whenever a bright moon is out and fog about, position yourself so the moon is partially hidden by a tree, and you’ll see the same. It’s just one of the many wonderful ways astronomical objects add their magic touch to the things of Earth.