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 215
discovered thatthe ring is double; i.e., composed of two concentric rings, with a dark line of separation between them; and in 1850, Bond of Cambridge, [J.S., discovered the third dusky or gauze ring between theprincipal ring and the planet, (It was discovered a fortnight later, independently, by… … Km. f>7. — The Piwi-HOH of Saturai Rings. three, is about 17,000. The semi-transparent ring, (\ has awidth of about 10,000 miles, leaving a clear space of fromsooo to 9000 miles in width between the planets equator and its inner edge. The thickness of the rings is extremely small,— probably not…
Astronomy
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