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Sidereal :: Sidereal (a.) Relating to the stars; starry; astral; as, sidereal astronomy..

Gunter''s Scale :: Gunter's scale () A scale invented by the Rev. Edmund Gunter (1581-1626), a professor of astronomy at Gresham College, London, who invented also Gunter's chain, and Gunter's quadrant..

Astronomer :: Astronomer (n.) One who is versed in astronomy; one who has a knowledge of the laws of the heavenly orbs, or the principles by which their motions are regulated, with their various phenomena..

Spherograph :: Spherograph (n.) An instrument for facilitating the practical use of spherics in navigation and astronomy, being constructed of two cardboards containing various circles, and turning upon each other in such a manner that any possible spherical triangle may be readily found, and the measures of the parts read off by inspection..

Astronomize :: Astronomize (v. i.) To study or to talk astronomy.

Astronomy :: Astronomy (n.) Astrology.

Argo :: Argo (n.) A large constellation in the southern hemisphere, called also Argo Navis. In modern astronomy it is replaced by its three divisions, Carina, Puppis, and Vela..

Selenology :: Selenology (n.) That branch of astronomy which treats of the moon.

Quadrant :: Quadrant (n.) An instrument for measuring altitudes, variously constructed and mounted for different specific uses in astronomy, surveying, gunnery, etc., consisting commonly of a graduated arc of 90�, with an index or vernier, and either plain or telescopic sights, and usually having a plumb line or spirit level for fixing the vertical or horizontal direction..

Spheric :: Spheric (a.) Of or pertaining to the heavenly orbs, or to the sphere or spheres in which, according to ancient astronomy and astrology, they were set..

Quadrivium :: Quadrivium (n.) The four liberal arts, arithmetic, music, geometry, and astronomy; -- so called by the schoolmen. See Trivium..

Tychonic :: Tychonic (a.) Of or pertaining to Tycho Brahe, or his system of astronomy..

Starred :: Star-read (n.) Doctrine or knowledge of the stars; star lore; astrology; astronomy.

Astronomy :: Astronomy (n.) The science which treats of the celestial bodies, of their magnitudes, motions, distances, periods of revolution, eclipses, constitution, physical condition, and of the causes of their various phenomena..

Astronomical :: Astronomical (a.) Of or pertaining to astronomy; in accordance with the methods or principles of astronomy.

Sphere :: Sphere (n.) In ancient astronomy, one of the concentric and eccentric revolving spherical transparent shells in which the stars, sun, planets, and moon were supposed to be set, and by which they were carried, in such a manner as to produce their apparent motions..

Stargasing :: Stargasing (n.) The act or practice of observing the stars with attention; contemplation of the stars as connected with astrology or astronomy.

Astronomy :: Astronomy (n.) A treatise on, or text-book of, the science..

Science :: Science (n.) Any branch or department of systematized knowledge considered as a distinct field of investigation or object of study; as, the science of astronomy, of chemistry, or of mind..

Navigation :: Navigation (n.) the science or art of conducting ships or vessels from one place to another, including, more especially, the method of determining a ship's position, course, distance passed over, etc., on the surface of the globe, by the principles of geometry and astronomy..

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