Mattison, Hiram, 1811-1868 · New York, Huntington and Savage, Mason and Law · leaf 158
inguishable from ordinarytwilight. 722. What is its Form and Position ? It has the form of a pyramid, with its base toward * Zo-Dl-AC-AL. PRIMARY ASTRONOMY. 151 ZODIACAL LIGHT. the Sun, and inclines alittle toward the horizon. 723. How far does it extendfrom the Sun ? From forty to ninetydegrees.… … FORM, EXTENT, ETC., OF THE ZODIACALLIGHT. [Let A represent the Sun, B B hisaxis, then C C will represent the extent,and D D the thickness of this curiousappendage to the Sun.] 726. What is this Lightsupposed to be ? Some have thought itan extension of the Sunsatmosphere, while othershave regarded…
Astronomy
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