The Exploration of SpaceTemple Press, 1951 - 198 pagini |
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Pagina 109
... exist on the Moon , though doubtless in different mineral forms . To the question " Is there life on the Moon ? " astronomers until quite recently would have returned an unequivocal “ No ” , pointing out that the lack of air and the ...
... exist on the Moon , though doubtless in different mineral forms . To the question " Is there life on the Moon ? " astronomers until quite recently would have returned an unequivocal “ No ” , pointing out that the lack of air and the ...
Pagina 129
... exist . The low pressure and the scarcity of water are obstacles which could be overcome by the techniques of biolo- gical engineering which Nature has already developed here . Nor is the temperature of Mars so low , despite its greater ...
... exist . The low pressure and the scarcity of water are obstacles which could be overcome by the techniques of biolo- gical engineering which Nature has already developed here . Nor is the temperature of Mars so low , despite its greater ...
Pagina 141
... exist even on the frozen outer worlds . One can imagine beings with tough , insulating skins through which the heat loss would be very small . As long as they had some source of energy - chemical , solar , perhaps even nuclear - and the ...
... exist even on the frozen outer worlds . One can imagine beings with tough , insulating skins through which the heat loss would be very small . As long as they had some source of energy - chemical , solar , perhaps even nuclear - and the ...
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