Elements of theoretical and descriptive astronomy, for the use of colleges and academies (1901)
White, Charles J · New York: J. Wiley & sons · leaf 18
ll benoticed by an observer who watches the heavens during anyclear night. The first is, that all the heavenly bodies, with theexception of the moon and the planets, retain constantly thesame relative situation; and the second is, that all these bodies,without any exception whatever, are… … NFig. 2. sensible horizon, and a second plane, parallel to this, passedthrough the centre of the earth, will be his rational horizon. If 14 DIURNAL MOTION, these two planes oe indefinitely extended in every direction, theywill intersect the surface of the celestial sphere in two circles ;but the…
Astronomy
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