Bob Mulligan has been a full-time professional astrologer since 1974. He is the founder of The Astrology Company and The Mastery of Astrology correspondence school. A lifetime member of NCGR, ISAR, AFAN, and OPA, he served as a founding president of OPA and authored the first edition of How to Start, Maintain, and Expand an Astrological Practice. His astrological approach is shaped by the spiritual teachings of Avatar Meher Baba, whom he follows, and he travels to India regularly. He developed INDRA, a natal chart interpretation software program, and writes a free monthly astrological newsletter. He speaks at astrology conferences in the United States, India, and Europe.