Once the province of astrologers and soothsayers, earthquake prediction has recently become an urgent pursuit of modern science. In The Jupiter Effect, two young scientists present a chilling hypothesis with astrological the forthcoming Grand Alignment of all the planets in 1982, the first such in 179 years, may well trigger a California earthquake far worse than the San Fransisco catastrophe of 1906. This new edition covers developments since the book was first published and reactions from the scientific community.