Athen Chimenti is an astrologer, educator, and founder of Mastering the Zodiac. He pioneered the modern revival of true sidereal astrology, a nature-based system that aligns with the visible constellations rather than the seasonal tropical zodiac. Over more than a decade of practice he has conducted readings for over 5,000 clients worldwide and trained more than a hundred professional astrologers through his courses. He holds a degree from Excelsior University. His expertise in true sidereal astrology was developed through independent research rather than a conventional school lineage. He has visited and lived in nineteen countries and regularly appears on podcasts and online media to discuss sidereal astrology.