Halley's Comet is a short-period comet that orbits the Sun every 75-76 years. It was named after English astronomer Edmond Halley, who observed it in 1682 and predicted its return. The comet is visible from Earth with the naked eye about every 75 years, making it one of the most famous comets in history. It last appeared in 1986 and is expected to return in 2061.