Bemærk: Kan ikke leveres før jul.
Bemærk: Kan ikke leveres før jul.
Michel van Pelt explains for the first time the principle of space tethers: what they are and how they can be used in space.
Bemærk: Kan ikke leveres før jul.
This book describes the technology, history, and future of rocket planes. He recounts the history of rocket airplanes, from the early pioneers who attached simple rockets onto their wooden glider airplanes to the modern world of high-tech research vehicles.