John Astrop had been an astrologer since the late 1960s. He wrote and illustrated over 150 children's books, lecturing, counselling, and writing on the subject. He was married to painter Caroline Smith, creator of the Elemental Tarot and the Moon Oracle on which John collaborated, writing both the accompanying books. In 1993 John wrote and illustrated 12 children's astrology books entitled Little Stars. He passed away 13th March 2013.