books.google.it - Encyclopedia of Space and Astronomy covers this timely and popular topic in a clear, comprehensive manner. Offering a complete presentation of the main concepts, terms, facilities, and people in astronomy, the encyclopedia pays special attention to space-based astronomy and space exploration. Broad coverage...http://books.google.it/books/about/Encyclopedia_of_Space_and_Astronomy.html?hl=it&id=VUWno1sOwnUC&utm_source=gb-gplus-shareEncyclopedia of Space and Astronomy
