The Exploration of SpaceTemple Press, 1951 - 198 pagini |
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Pagina 7
... material , and they would travel away into space . Το steer themselves towards the Moon , it was merely necessary to ... materials with such a tendency to levitation would long ago have departed into space . It is not difficult to show ...
... material , and they would travel away into space . Το steer themselves towards the Moon , it was merely necessary to ... materials with such a tendency to levitation would long ago have departed into space . It is not difficult to show ...
Pagina 78
... material which might provide rocket fuel . The enormous potential importance of the lunar base will be discussed in ... materials needed for any desired fuel would be available , if the problems of mining , purification and so on can be ...
... material which might provide rocket fuel . The enormous potential importance of the lunar base will be discussed in ... materials needed for any desired fuel would be available , if the problems of mining , purification and so on can be ...
Pagina 116
... materials from Earth . Possibly suitable caves or clefts might be found which could be adapted , but this is one of ... material from which rocket fuel could be obtained . Water may again provide the answer . As was pointed out on page ...
... materials from Earth . Possibly suitable caves or clefts might be found which could be adapted , but this is one of ... material from which rocket fuel could be obtained . Water may again provide the answer . As was pointed out on page ...
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