The Exploration of SpaceTemple Press, 1951 - 198 pagini |
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Pagina 40
... radio echoes from the Moon - a feat hundreds of times more difficult than sending a one - way signal over the same distance ! ) During the next decade it would certainly be possible to build an orbiting rocket carrying a small ...
... radio echoes from the Moon - a feat hundreds of times more difficult than sending a one - way signal over the same distance ! ) During the next decade it would certainly be possible to build an orbiting rocket carrying a small ...
Pagina 85
... radio and radar in space , and this is a subject of almost as much importance as the building of rocket motors themselves . It is true that without rockets space - travel would be impossible ( at least in the present state of our ...
... radio and radar in space , and this is a subject of almost as much importance as the building of rocket motors themselves . It is true that without rockets space - travel would be impossible ( at least in the present state of our ...
Pagina 153
... radio waves , which have much greater penetrating power and so may be able to teach us something about the structure of parts of the Universe which we can never " see " in the ordinary way . Because radio waves are about a million times ...
... radio waves , which have much greater penetrating power and so may be able to teach us something about the structure of parts of the Universe which we can never " see " in the ordinary way . Because radio waves are about a million times ...
Cuprins
THE SHAPING OF THE DREAM | 1 |
THE EARTH AND ITS NEIGHBOURS | 9 |
THE ROCKET | 17 |
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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