orbit the earth
11Earth — This article is about the planet. For other uses, see Earth (disambiguation). Earth   …
12Earth's orbit — In astronomy, The Earth s Orbit involves the Earth orbiting the Sun at an average distance of about 150 million kilometers every 365.2564 mean solar days (1 sidereal year). From Earth, this gives an apparent movement of the Sun with respect to… …
13Earth 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… …
14orbit — 01. Aristotle believed that the heavenly bodies moved only in circular [orbits] at a uniform speed. 02. In 1962, two Soviet spacecraft circled earth in adjacent [orbits], and were in visual and radio contact. 03. Some astronomers believe Pluto s… …
15Earth station — An earth station or ground station is the surface based (terrestrial) end of a communications link to an object in outer space. The space end of the link is occasionally referred to as a space station (though that term often implies a human… …
16earth — n. 1) to circle; orbit the earth 2) the earth revolves around the sun; rotates on its axis 3) on (the) earth (is there more land or water on earth?) 4) (misc.) down to earth ( practical ); who on earth would ever do that? what on earth is that? * …
17orbit — [[t]ɔ͟ː(r)bɪt[/t]] orbits, orbiting, orbited 1) N COUNT: also in/into N An orbit is the curved path in space that is followed by an object going round and round a planet, moon, or star. Mars and Earth have orbits which change with time... The… …
18the seven planets — seven bodies previously thought to orbit the Earth (Sun, Mercury, Venus, Moon, Saturn, Jupiter, and Mars) …
19Orbit determination — is a branch of astronomy specialised in calculating, and hence predicting, the orbits of objects such as moons, planets, and spacecraft . These orbits could be orbiting the Earth, or other bodies. The determination of the orbit of newly observed… …
20The Great Daylight 1972 Fireball — (or US19720810) is an Earth grazing meteoroid which passed within 57 kilometres of the surface of the Earth at 20:29 UTC on August 10 1972. It entered the Earth s atmosphere in daylight over Utah, United States (14:30 local time) and passed… …
