The call of the stars; a popular introduction to a knowledge of the starry skies with their romance and legend (1919)
Kippax, John R. (John Robert), 1849-1922 · New York, London, G. P. Putnam's sons · leaf 342
ifle larger(nearly two per cent.) in winter than in summer, theEarth then, being about 31^ million miles nearer to it.It rotates on an axis inclined about 7l° from a per-pendicular to the plane of the ecliptic, in the same direc-tion as do the planets, making a rotation in about 25^days. Not being… … Yerkes Observatory Plate XX. The Solar Disk (Showing calcium flocculi) The Sun 285 twenty-five days, it is approximately twenty-seven daysat midway between the equator and the poles. Besides,the sun has a motion in space, since, at a velocity ofthirteen miles a second, it is carrying the wholesolar…
Stars · Constellations · Planets
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