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celestial coordinates
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Celestial coordinates seen by an observer in mid-northern latitudes. His celestial meridian is a great circle passing through his zenith and the poles. His astronomical horizon meets the celestial sphere at infinity.
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Celestial coordinates seen by an observer in mid-northern latitudes. His celestial meridian is a great circle passing through his zenith and the poles. His astronomical horizon meets the celestial sphere at infinity.
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Nicolaus Copernicus. Nicolas Copernicus (1473-1543) Polish astronomer. In 1543 he published, forward proof of a Heliocentric (sun centered) universe. Coloured stipple engraving published London 1802. De revolutionibus orbium coelestium libri vi.
All About Astronomy
The orbits of the planets and other elements of the solar system, including asteroids, Kuiper belt, Oort cloud, comet
Space Odyssey