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 |
THE EARTH AND ITS NEIGHBOURS | 9 |
THE ROCKET | 17 |
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Termeni și expresii frecvente
able acceleration actual already appear astronautics astronomers atmosphere atomic become body build carry certainly Chapter close completely consider considerable course deal developed difficult direction discovered discuss distance Earth effect energy escape exist exploration extremely fact fall field Figure fuel give given gravity greater heat human hundred idea imagine important impossible increase interesting interplanetary involved journey known landing least less light limit live look lunar Mars material matter means miles minutes Moon motors necessary never observed once orbit oxygen perhaps period planets Plate possible practical present pressure probably problem produce purely radio reach reason relatively remain rocket round satellite scientific seems seen ship shown simple Solar space spaceship speed stars stations structure surface telescope temperature thousand Universe velocity Venus weight whole