Gravitation
Charles W. Misner, Kip S. Thorne, John Archibald Wheeler, John Wheeler, Kip Thorne
Put as simply as possible, this is a book on Einstein's theory of gravity (general relativity). It is the first textbook on the subject that uses throughout the modern formalism and notation of differential geometry, and it is the first book to document in full the revolutionary techniques developed during the past decade to test the theory of general relativity.
