Astronomy for the use of schools and academies (1882)
Gillet, J. A. (Joseph Anthony), 1837-1908, Rolfe, W. J. (William James), 1827-1910 · New York : Potter, Ainsworth, & Co. · leaf 45
28 ASTRONOMY. … tial sphere, that it practically makes no difference whetherwe consider a point on its surface, or one at its centre, asthe centre of the celestial sphere. The ecliptic is, therefore. a great circle. The earths orbit lies in the plane of the ecliptic ; but itextends only an inappreciable distance…
Astronomy
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