Chris Brennan is a professional astrologer from Denver, Colorado, USA. He was educated at Kepler College, where he focused on cross-cultural comparisons between the astrological traditions. He is the former President of the Association for Young Astrologers, and former Research Director of the National Council for Geocosmic Research. He is a regular contributor to The Mountain Astrologer magazine, and is the host of an award-winning weekly program called The Astrology Podcast. He has lectured widely on Hellenistic astrology since 2006, and teaches a certification course on the subject with students from around the world.