Planet fans can head to North Medford High School tonight to hear a program about the history of planetary motion.

Planet fans can head to North Medford High School tonight to hear a program about the history of planetary motion.

It's at 7 p.m. at the high school's planetarium at 1900 N. Keene Way Drive.

The "From Aristotle to Einstein, the History of Planetary Motion" presentation is organized by the Southern Oregon Sky Watchers and is free and open to the public.

Details: 842-5308.