Elements of theoretical and descriptive astronomy, for the use of colleges and academies (1901)
White, Charles J · New York: J. Wiley & sons · leaf 188
bit of Saturn. Let HN be the line of nodes ofthe rings, and draw the lines GO and KM parallel to HN, andtangent to the earths orbit. When the planet is at H, the plana RINGS OF SATURN. 179 of the rings passes through the sun, and only the edge of therings is illuminated. In such a case the rings… … ?ig. n. of the rings, they will not be visible. And thirdly, if, whilethe planet is within the same limits, the plane of the ringspasses between the earth and the sun, the dark side of therings will be turned towards the earth, and they will not beseen. When the planet is beyond these limits, it is…
Astronomy
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![An illustration from Nicolai Copernici Torinensis De reuolutionibus orbium coelestium, libri VI : Habes in hoc opere iam recens nato, & aedito, studiose lector, motus stellarum, tam fixarum, quàm erraticarum, cum ex ueteribus, tum etiam ex recentibus obseruationibus restitutos: & nouis insuper ac admirabilibus hypothesibus ornatos. Habes etiam tabulas expeditissimas, ex quibus eosdem ad quoduis tempus quàm facillime caculare poteris. Igitur eme, lege, fruere. [Line in Greek] (1543)](https://img.insideoutlibrary.com/img/200/ia-nicolaicopernici00cope-199-120.webp)
