Engineer, teacher and author, who discovered the Lunation TriangleThe right-angled triangle within which the lengths of the two longer sides are the relative proportions of the solar and lunar years. (c. 1990), that enabled the lunar year to be rationally related to the solar yearFrom Earth: the time in which the sun moves once around the Zodiac, now known to be caused by the orbital period of the Earth around the Sun.. During the 1990s we collaborated to further understand the astronomical and numerical discoveries of the megalithic astronomers.