The Exploration of SpaceHarper, 1951 - 199 pagini |
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Pagina 40
... ranges required have been only two hundred miles or so , but interplanetary ranges would be available with special tech ... range out in world - circling orbits with a complete indifference to the geography beneath them . The extent to ...
... ranges required have been only two hundred miles or so , but interplanetary ranges would be available with special tech ... range out in world - circling orbits with a complete indifference to the geography beneath them . The extent to ...
Pagina 87
... range without putting up power . It is reasonable to suppose that a spaceship could carry such a collector , folded up like an umbrella , with an effective area of a square yard or more . Very much larger mirrors could be em- ployed at ...
... range without putting up power . It is reasonable to suppose that a spaceship could carry such a collector , folded up like an umbrella , with an effective area of a square yard or more . Very much larger mirrors could be em- ployed at ...
Pagina 113
... range would be rather short and the service some- what erratic owing to the Moon's rugged nature and near horizon -only two miles away for a man six feet high . One of the first tasks of the expedition would probably be to erect as tall ...
... range would be rather short and the service some- what erratic owing to the Moon's rugged nature and near horizon -only two miles away for a man six feet high . One of the first tasks of the expedition would probably be to erect as tall ...
Cuprins
The Shaping of the Dream | 1 |
The Earth and Its Neighbours | 7 |
The Rocket | 17 |
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acceleration already asteroids astronautics astronomers atmosphere body bricks 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 giant gravitational field gravity heat Hermann Oberth hundred miles idea imagine important interplanetary flight interplanetary travel interstellar ionosphere journey Jupiter landing light light-years lunar Mare Imbrium Mars and Venus Martian means Mercury meteors million 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 tion trolley Uranus voyage weight