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Unformatted text preview: named by European explorers in the 17th & 18th centuries. The patterns of stars have no physical significance! Stars that appear close together may lie at very different distances. Modern astronomers use them as landmarks. Celestial Sphere, Cont. North & South celestial poles: the points in the sky directly above the Earths North and South poles celestial equator: the extension of the Earths equator onto the celestial sphere ecliptic: the annual path of the Sun through the celestial sphere, which is a projection of ecliptic plane (it is 23.5 degrees to the equator because of the tilt of the Earths Axis)...
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This note was uploaded on 09/11/2011 for the course AST 2002 taught by Professor Britt during the Spring '08 term at University of Central Florida.
- Spring '08