A circumhorizontal arc, often called a fire rainbow, is an optical phenomenon in which an ice halo forms by hexagonal, plate-shaped ice crystals in high level cirrus clouds. The halo is so large that the arc appears parallel to the horizon, hence the name.
When the sun is very high in the sky, sunlight entering flat, hexagon shaped ice crystals gets split into individual colors just like in a prism.
Image captured by Lisa Gonnelli.
MANTISES in METAL
Hand fabricated from brass bar stock and sheet brass
Geoffrey Haberman [geoffhaber]
Idolomantis diabolica adult male
Devil’s Flower Mantis
Giant Malaysian Shield Mantis
Hymenopus coronatus adult male
Saturn’s hexagon is a persisting six sided cloud pattern around the north pole of the planet. It is created by a band of upper-atmospheric winds, and the sides of it are about 13,800 km (8,600 mi) long, which is longer than the Earth’s diameter. There’s a hurricane swirling within the hexagon.
(Images by the Cassini spacecraft)
An animation of the hexagonal storm present on Saturn’s north pole. The hexagon is 30,000 kilometers across and has constant winds of more than 300 kilometers per hour. Images acquired by the Cassini spacecraft on December 10th, 2012.