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Astronomy
chap's 0,15,16
5
Science
Undergraduate 1
09/19/2007
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Term
geocentric
 Definition
earth centered
Term
celectial sphere
 Definition
an imaginary hollow shere upon which the ancients believed the stars were hung and carried around the earth
Term
kepler's laws of plantery motion 1
 Definition
planets travel in ellipses
Term
kepler's laws of plantery motion 2
 Definition
law of equal areas- planets revovle equal areas over equal intervals of time.
Term
kepler's laws of plantery motion 3
 Definition
the orbital period of planets and their distances to the sun are propotional.
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