Astronomy explained upon Sir Isaac Newton's Principles, and made easy to those who have not studied mathematics. To which are added, a plain method of finding the distances of all the planets from the sun, by the transit of Venus over the sun's disc, in the year 1761: an account of Mr. Horrox's observations of the transit of Venus, in the year 1639 .. (1809)
Author: Ferguson, James, 1710-1776
Publisher: Philadelphia, M. Carey
Year: 1809
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