Astronomy explained upon sir isaac Newton's principles, and made easy to those who have not fludied mathematics.: To which are added a plian 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 observation of the transit of Venus in the year 1639 : and of the distances of all the planets from the sun, as deduced from observations of the transit in the year 1761
Ferguson James | W. Straham | 1785