The Exploration of SpaceHarper, 1959 - 200 pagini |
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Pagina 33
... seen pictures of the " Wall of Death , " a popu- lar circus sideshow in which a motorcyclist drives round the inside of an almost vertical cylinder , centrifugal force allowing him to defy gravity . It will be seen that exactly the same ...
... seen pictures of the " Wall of Death , " a popu- lar circus sideshow in which a motorcyclist drives round the inside of an almost vertical cylinder , centrifugal force allowing him to defy gravity . It will be seen that exactly the same ...
Pagina 50
... “ fall ” usually implies " downwards . " The spaceship , as we have seen , could be moving upwards or horizontally while under the influence of gravity alone . So perhaps a better phrase than " free 50 The Exploration of Space.
... “ fall ” usually implies " downwards . " The spaceship , as we have seen , could be moving upwards or horizontally while under the influence of gravity alone . So perhaps a better phrase than " free 50 The Exploration of Space.
Pagina 91
... seen that there is no fundamental difficulty in producing perfectly comfortable conditions . The provision of food also presents no problem apart from that of disposable payload . It is sometimes suggested that very concentrated foods ...
... seen that there is no fundamental difficulty in producing perfectly comfortable conditions . The provision of food also presents no problem apart from that of disposable payload . It is sometimes suggested that very concentrated foods ...
Cuprins
The Shaping of the Dream | 1 |
Navigation and Communication in Space | 78 |
1 | 118 |
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Termeni și expresii frecvente
acceleration airless asteroids astronautics astronomers atmosphere body bricks build carry certainly Chapter chemical completely course crew diameter difficult distance Earth energy engineering enormous escape velocity exploration extremely fact Figure free orbit fuel Galaxy gases gravitational field gravity heat hundred hydrogen imagine important interplanetary flight interplanetary travel interstellar ionosphere journey Jupiter landing LEWIS CARROLL light light-years lunar Mars and Venus Martian means Mercury meteors miles million minutes missiles Moon Moon's motors never normal observed orbit oxygen payload perhaps planetary Plate Pluto possible pounds pressure probably problem produce propellant propulsion Proxima Centauri R. A. Smith radar radiation radio reach reason refueling rocket power satellite Saturn scientific ship Solar System space space-flight space-stations space-suits space-travel spaceship speed spinning stars stations structure sunlight surface take-off tanks telescope temperature thousand thrust trolley Uranus vehicle voyage weight weightless