© Lucas Isley

Christopher Renstrom

Christopher Renstrom is the author of The Cosmic Calendar and Ruling Planets, and the creator of Rulingplanets.com. He currently writes the daily horoscopes for the San Francisco Chronicle and SFGate.com, along with the weekly horoscope for Astrology Hub. Renstrom also lectures on the history of astrology in America from pre-Revolution to modern times, and runs Ruling Planet workshops around the country.