Conversations on the Plurality of Worlds Conversations on the Plurality of Worlds Conversations on the Plurality of Worlds () is a popular science book by French author Bernard le Bovier de Fontenelle, published in 1686. It offered an explanation of the heliocentric model of the Universe, suggested by Nicolaus Copernicus in his 1543 work "De revolutionibus orbium coelestium". The book is Fontenelle's most famous work and is considered to be one of the first major works of the Age of Enlightenment. Unlike many scientific works of its time, "Conversations on the Plurality of Worlds" was written not in Latin, but in French and is notable as
Newcomb's Tables of the Sun Newcomb's Tables of the Sun Newcomb's "Tables of the Sun" is the short title and running head of a work by the American astronomer and mathematician Simon Newcomb entitled "Tables of the Motion of the Earth on its Axis and Around the Sun" on pages 1–169 of "Tables of the Four Inner Planets" (1895), volume VI of the serial publication "Astronomical Papers Prepared for the Use of the American Ephemeris and Nautical Almanac". The work contains Newcomb's mathematical development of the position of the Earth in the Solar System, which is constructed from classical celestial mechanics as well as centuries