The annual Leonid meteor shower is one of the night sky’s most exciting events. Our planet is currently passing through a debris trail left behind in space hundreds of years ago by Comet Tempel-Tuttle. As those small fragments of ice and stone hit our atmosphere at thousands of miles per hour they burn up, producing bright trails known as meteors or shooting stars. Fragments that make it to the surface of the Earth are meteorites, but the diminutive particles that generate the Leonids are too small and friable to survive their passage through our atmosphere.

Artist's impression of a meteor shower

Peak meteor activity is expected to occur between midnight and dawn tonight and into Tuesday morning. Bill Cooke of NASA’s Meteoroid Environment Office stated: “We’re predicting 20 to 30 meteors per hour over the Americas.”

The Leonids take their name from Leo, due to an optical illusion that sometimes make it appear as if they emanate from that constellation.

Tucson’s dark skies are ideal viewing for meteor showers, especially for night owls who are happy to stay up into the wee hours. If you’re so inclined, turn off the house lights, mix up some hot chocolate or a favorite tipple, head outside after midnight, park yourself in a spot with an unobstructed view of the heavens and see what transpires. It may be a memorable celestial show.