Elements of theoretical and descriptive astronomy, for the use of colleges and academies (1901)
White, Charles J · New York: J. Wiley & sons · leaf 90
n appears to move is called the ecliptic, and thetwo points in which it intersects the celestial equator are calledthe vernal and the autumnal equinox. p Let Fig. 34 be a representation ofthe celestial sphere. EA Q V is the equi-noctial, Pp is the axis of the sphere, andP the north pole. The circle… … 84 DISTANCE OF THE SUN. where it na« ics greatestnorthern declination, on the 21 stof June,This point is called the northern summer solstice. From thispoint it moves eastward and southward, passes the autumnalequinox A on the 21st of September, and reaches the point D,called the northern winter…
Astronomy
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