Celestial globe
A sphere on which the stars, constellations, and various astronomical circles are drawn. Celestial globes probably predate terrestrial globes. They are usually mounted in harnesses that allow them to rotate and be tilted to different latitudes.
Planetarium
A geocentric model of the solar system that shows the positions of the sun, moon, and planets as viewed from the earth at various times. The positions of the heavenly bodies may be indicated by individual dials, as with the Antikythera mechanism, or through the relative positions of small spheres representing the bodies, as with Archimedes' planetarium. Modern planetaria project images of the heavenly bodies onto a large hemisphere in whose interior observers are situated.
Orrery
A heliocentric model of the solar system in which the planets move about a stationary sun through a clockwork mechanism. Complicated ones can also show the motions of the moons around the various planets and the motion of the rings of Saturn. Named in honor of Charles Boyle, the fourth earl of Orrery, who purchased one of the first such devices built by John Rowley in the early eighteenth century.
Armillary sphere
A skeletal sphere formed from circular bands that denote the celestial equator, ecliptic, tropics, and arctic and antarctic circles. Usually a ball representing the earth is placed in its center. It is used to demonstrate the motion of the stars about the earth.

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46 A Fifty Year Anniversary of a Two Thousand Year Dream   2013.05.04 74349
45 혼천시계  fileimage 2013.05.04 65326
44 Archimedes' Planetarium   2013.05.04 65168
43 The Farnese Atlas  fileimage 2013.05.04 65103
42 혼상   2013.05.04 63883
» Planetarium & Orrery   2013.05.04 62326
40 우리나라 초유의 천체과학관 (동아일보 1967.4.29)  fileimage 2012.12.01 62235
39 한국의 별그림 역사와 별자리그림  file 2013.05.07 60916
38 플라네타리움 영사기 (동아일보 1931.11.08)  fileimage 2012.12.17 60702
37 한국 천체투영관의 역사 - 이강환 박사  file 2012.10.03 60491
36 천체투영관의 교육적 활용방안 - 백창현 박사  file 2012.11.06 60487
35 Handbook for Aides of The Buhl Planetarium" - No. 8 (June, 1954)  fileimage 2013.01.20 60417
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