the figure of the moon in its first or last quarter, resembling a segment of a ring tapering to points at the ends
the movement or path of the earth or a heavenly body turning on its axis
either of the two times a year when the sun is at its greatest distance from the celestial equator that takes place about June 21 and about December 22
a zodiacal constellation between Virgo and Serpens also called the Balance
a large system of stars held together by mutual gravitation and isolated from similar systems by vast regions of space
any of the small bodies, often remnants of comets, traveling through space: when such a body enters the earth's atmosphere it is heated to luminosity and becomes a meteor