The Exploration of SpaceTemple Press, 1951 - 198 pagini |
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Pagina 7
... difficult to show that a substance like Wells ' " Cavo- rite " is a physical impossibility , defying fundamental laws of nature . But the idea of anti - gravity is not in itself absurd , and we shall return to it in Chapter 17 . Wells ...
... difficult to show that a substance like Wells ' " Cavo- rite " is a physical impossibility , defying fundamental laws of nature . But the idea of anti - gravity is not in itself absurd , and we shall return to it in Chapter 17 . Wells ...
Pagina 184
... difficult , dangerous and expensive task . The difficulties must not , however , be exag- gerated , for the steadily ... difficulty and magnitude were so great that very few people would have considered them possible . 2 The important ...
... difficult , dangerous and expensive task . The difficulties must not , however , be exag- gerated , for the steadily ... difficulty and magnitude were so great that very few people would have considered them possible . 2 The important ...
Pagina 188
... difficult to locate , if it were covered with light and radar- absorbing paint . It is one of the tragic ironies of our age that the rocket , which could have been the symbol of humanity's aspirations for the stars , has become one of ...
... difficult to locate , if it were covered with light and radar- absorbing paint . It is one of the tragic ironies of our age that the rocket , which could have been the symbol of humanity's aspirations for the stars , has become one of ...
Cuprins
THE SHAPING OF THE DREAM | 1 |
Automatic Rocket Surveying Mars | 4 |
THE EARTH AND ITS NEIGHBOURS | 9 |
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acceleration already astronautics astronomers atmosphere atomic rockets body bricks British Astronomical Association build carry certainly Chapter chemical completely course crew degrees F difficult direction distance Earth energy enormous escape velocity exploration extremely fact Figure free orbit fuel Galaxy gravitational field gravity heat Hermann Oberth hundred miles idea imagine important interplanetary flight interplanetary travel interstellar ionosphere journey Jupiter landing light light-years lunar Mars and Venus Martian means Mercury meteors minutes missile Moon Moon's motors never observed oxygen payload perhaps planetary planets Pluto possible pounds pressure pressurised probably problem produce propellant propulsion Proxima Centauri R. A. Smith radar radiation radio reach reason refuelling return to Earth rocket power satellite Saturn scientific ship Solar System space space-flight space-station space-suits space-travel spaceship speed spinning stars stations surface take-off telescope temperature terrestrial thousand thrust trolley Uranus voyage weight