Celestial Mechanics (1799) by Pierre Laplace
	Commentariolus (1514) by Nicolaus Copernicus
	Cosmic Connection: An Extraterrestrial Perspective (1973) by Carl Sagan
	Cosmos (1980) by Carl Sagan
	De revolutionibus orbium coelestium (1543) by Nicolaus Copernicus
	Draper Catalogue of Stellar Spectra (1924) by Annie Jump Cannon
	Exposition of the System of the World (1796) by Pierre Laplace
	History and Demonstration Concerning Sunspots (1613) by Galileo Galilei
	Pale Blue Dot: A Vision of the Human Future in Space (1994) by Carl Sagan
	Political Power and Personal Freedom (1959) by Sidney Hook
	Popular Astronomy (1878) by Simon Newcomb
	Research on the Secular Inequalities of Jupiter and Saturn (1785) by Pierre Laplace
	Sidereus Nuncius (The Starry Messenger) (1610) by Galileo Galilei
	Theoria motus corporum coelestium in sectionibus conicis solem ambientium (1809) by Carl Friedrich Gauss
	Theoria motuum planetarum et cometarum (1744) by Leonhard Euler
	What Social Classes Owe to Each Other (1883) by William Graham Sumner