A high-school astronomy: in which the descriptive, physical, and practical are combined .. (1859)
Mattison, Hiram, 1811-1868 · New York, Mason brothers · leaf 174
5,000to 20,000 of the first seven magnitudes are already regis-tered, or noted down in catalogues; and Prof. Olmstedobserves that Lalande has registered the positions of noless than 50,000. 319. The reason why there are so many more of thesmall stars than of the large ones is, that we are in… … Let the central star represent thesun (a star only among the rest), withthe solar system revolving betweenhim and the first circle. The 18 starsin space 1st will appear to be of thefirst magnitude, on account of theirnearness, and they are thus few be-cause they embrace but a small partof the…
Astronomy
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