The pith of astronomy <without mathematics>; the latest facts and figures as developed by the giant telescopes; (1896)
Bayne, Samuel G. (Samuel Gamble), 1844-1924 · New York, Harper & brothers · leaf 150
require a new name. 102 THE PITH OF ASTRONOMY Such a period seems long in human his-tory, but it is but an hour in recordingcelestial time, when we consider thatmost astronomers agree in placing theage of our little modern planet at 20,-000,000 years. Astronomers can go back in their cal-culations… … THE GREAT NEBULA OF ANDROMEDA (Visible to the naked eye.) NEBULAE A nebula is a luminous patch in theheavens, billions of miles beyond thelimits of our solar system. There are thousands of nebulas, andthey are of various composition, color,and size. Sir William Herschel observedand formed a…
Astronomy
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