Science / Astrology / Vigintile: Alternate term for semi-decile. See semi-decile.
Science / Astrology / Semi-Decile: The twentieth harmonic, 18°; interpreted as a weak minor easy aspect. Also called a vigintile. MORE
Science / Astrology / Kepler, Johannes: One of the founders of modern astronomy who discovered the three basic laws of planetary motion, among them that planetary orbits are elliptical. He introduced several minor aspects including the bi-q MORE