Lessons in astronomy including uranography. A brief intoductory course without mathematics (1896)
Young, Charles A. (Charles Augustus), 1834-1908 · Boston, London, Ginn and company · leaf 126
ns disc are usually moreor less oval, showing that the suns axis is inclined to theecliptic, and so inclined that the north polo is tipped about7\° towards the position which the earth occupies near thefirst of September. Twice a year the paths become straight,when the earth is in the plane of the…
Astronomy
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