A high-school astronomy: in which the descriptive, physical, and practical are combined .. (1859)
Mattison, Hiram, 1811-1868 · New York, Mason brothers · leaf 48
ward in a balloon weighs less and less as nis distance from the earthis increased. The same law holds good in regard to the planetary worlds. The nearera planet is te the sun, or to any other body, the stronger the mutual gravitation. 68. How effect weight of bodies on the earth to reduce her… … 44 ASTRONOMY. 70. This great law was discovered by Sir Isaac New-ton, in 1666. He was then only twenty-four years ofage. The inquiry which led to the discovery is said to have been suggested to the mind ofthis youthful philosopher by seeing an apple fall from the limb of a tree. What drewthese two…
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-145-81.webp)
