Rama: The Complete Rama Omnibus. by Arthur C. Clarke, Gentry Lee

If you love space adventure stories such as Larry Niven's RINGWORLD or Arthur C. Clarke's 2001, this is the perfect collection.Rama is a huge cylindrical object, weighing more than ten trillion tons. And it is hurtling through the solar system at inconceivable speed. Then a space probe confirms the unthinkable: Rama is no natural object. It is, incredibly, an interstellar spacecraft.Space explorers and planet-bound scientists alike prepare for mankind's first encounter with alien intelligence. It will kindle their wildest dreams . . . and fan their darkest fears. For no one knows who the Ramans are or why they have come. And now the moment of rendezvous awaits - just behind a Raman airlock door.