books.google.com - Both a scientific treatise on lunar astronomy and a remarkably foresighted science-fiction story about a voyage to the moon, Kepler's Somnium went unrecognized for centuries. This edition of the work by the 17th-century mathematician and astronomer presents a full translation from the original Latin,...http://books.google.com/books/about/Kepler_s_Somnium.html?id=OdCJAS0eQ64C&utm_source=gb-gplus-shareKepler's Somnium