Solar system diagram,19th century. This diagram shows the Sun (centre) and the orbits and astronomical symbols of the planets and major asteroids,with a comet (parabolic orbit). The inner planets are: Mercury,Venus,Earth (and its Moon) and Mars. The outer planets are Jupiter (centre left,four moons),Saturn (lower left,rings and seven moons) and Uranus (lower right,six moons). Neptune was not discovered until 1846. The asteroids and dwarf planets (clockwise from upper left) are: Juno (1804),Vesta (1807),Pallas (1802),and Ceres (1801). This page is from 'Universal Technological Dictionary' (1823) by British author George Crabb (1778-1851) |