Chris Brennan is a professional astrologer educated at Kepler College, where he focused on cross-cultural comparisons between astrological traditions. He trained with Robert Hand through Project Hindsight, a major initiative for the recovery and translation of Hellenistic and medieval astrological texts, and received direct training from Demetra George in Hellenistic timelord techniques including zodiacal releasing. He is the author of Hellenistic Astrology: The Study of Fate and Fortune (Amor Fati Publications, 2017), a comprehensive survey of the Hellenistic tradition. He is a former President of the Association for Young Astrologers, former Research Director of NCGR, and Associate Editor of The Mountain Astrologer. He founded the Denver Astrology Group in 2008 and runs The Astrology School, offering courses in Hellenistic astrology, electional astrology, horary astrology, and professional practice.