plane of the earth's equator
1Figure of the Earth — An oblate spheroid Geodesy …
2Equator of the sun — Equator E*qua tor, n. [L. aequator one who equalizes: cf. F. [ e]quateur equator. See {Equate}.] 1. (Geog.) The imaginary great circle on the earth s surface, everywhere equally distant from the two poles, and dividing the earth s surface into… …
3Equator — E*qua tor, n. [L. aequator one who equalizes: cf. F. [ e]quateur equator. See {Equate}.] 1. (Geog.) The imaginary great circle on the earth s surface, everywhere equally distant from the two poles, and dividing the earth s surface into two… …
4Equator of a planet — Equator E*qua tor, n. [L. aequator one who equalizes: cf. F. [ e]quateur equator. See {Equate}.] 1. (Geog.) The imaginary great circle on the earth s surface, everywhere equally distant from the two poles, and dividing the earth s surface into… …
5The small hours — Hour Hour, n. [OE. hour, our, hore, ure, OF. hore, ore, ure, F. heure, L. hora, fr. Gr. ?, orig., a definite space of time, fixed by natural laws; hence, a season, the time of the day, an hour. See {Year}, and cf. {Horologe}, {Horoscope}.] 1. The …
6Properties of the Moon and the Earth-Moon system — ▪ Table Properties of the Moon and the Earth Moon system Moon Earth approximate ratio (Moon to Earth) mean distance from Earth (orbital radius) 384,400 km period of orbit around Earth (sidereal period of revolution) 27.3217 Earth days inclination …
7Earth — This article is about the planet. For other uses, see Earth (disambiguation). Earth   …
8Earth Sciences — ▪ 2009 Introduction Geology and Geochemistry The theme of the 33rd International Geological Congress, which was held in Norway in August 2008, was “Earth System Science: Foundation for Sustainable Development.” It was attended by nearly… …
9Equator — For other uses, see Equator (disambiguation). 0° Equator …
10Celestial equator — The celestial equator is a great circle on the imaginary celestial sphere, in the same plane as the Earth s equator. In other words, it is a projection of the terrestrial equator out into space. As result of the Earth s axial tilt, the celestial… …
