A fast-paced, high-interest overview of the features, purpose, history, and high-speed capabilities of NASA's X-43A--the fastest unmanned aircraft in the world. A Spanish translation.

Part of the ¡Ahora es rápido! series

As seemingly impossible travel barriers are broken by self-driving automobiles and futuristic passenger vehicles, inquisitive minds are often fascinated by the many forms, features, and abilities of transportation—especially when it comes to speed. Now That’s Fast! offers a high-interest introduction to the mind-boggling speeds and incredible features of some of the world’s fastest terrestrial vehicles and airborne crafts. Each title includes a brief history as it explains the purpose of these distinctive forms of transportation, and a diagram allows readers an up-close look at the featured craft’s construction.