Don't Miss November's Leonid Meteor Shower—a Celestial Spectacle That Once Produced 100,000 Shooting Stars
55P/Tempel-Tuttle, discovered by Ernst Tempel and Horace Tuttle in 1865, is a small comet with a nucleus measuring just 2.24 miles across. The "P" in its name indicates that the comet has an orbital period of less than 200 years, making it a periodic comet, per Space.com.