Kim Farnell has been a professional astrologer since 1990 when she gained her Diploma from the Faculty of Astrological Studies. She was a member of the Council of the Astrological Association of Great Britain and is now on the National Executive Committee of the British Astrological and Psychic Society. She has written and been the editor for a number of magazines and specialist publications all over the world.

Cat Javor began her studies in astrology in Australia in 1983. She became a professional consultant astrologer in 1996 and has written on the subject for the Astrological Journal, various national and international newspapers, magazines and the Internet. She has also lectured at the Astrological Lodge of London.

Helene Schnitzer studied astrology and Jungian psychology at the Achernar School for Astrology in Amstelveen (Holland), and Astro*Carto*Graphy with Arielle Guttman in Santa Fe, New Mexico. She has been a professional astrologer since 1986 and has translated several astrological works, including The Secret Language of Birthdays, to which she contributed as a writer.