Nineteen years before Space Shuttle, the small, black, rocket-powered, bullet-shaped X-15 showed it was possible to fly into - and out of - space. There had never been anything like the X-15; it had a million-horsepower engine and could fly twice as fast as a rifle bullet. The X-15 set records that stood for years. Specialty Press's bestseller, Hypersonic, has been re-released in a softbound format at a reduced price. This book is the most...