The Exploration of SpaceTemple Press, 1951 - 198 pagini |
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Pagina 26
... certainly be developed during the next few decades and will be the precursors of the true " spaceships " . To build them would not involve any new dis- coveries or fundamental advances in rocket design : the knowledge required is ...
... certainly be developed during the next few decades and will be the precursors of the true " spaceships " . To build them would not involve any new dis- coveries or fundamental advances in rocket design : the knowledge required is ...
Pagina 75
... certainly seem dangerous - not to mention hard on the nerves of the crew ! -to wait until the Moon was so close before doing any braking . Yet it would be quite safe , especially if there were even a small reserve of power for increased ...
... certainly seem dangerous - not to mention hard on the nerves of the crew ! -to wait until the Moon was so close before doing any braking . Yet it would be quite safe , especially if there were even a small reserve of power for increased ...
Pagina 192
... certainly hundreds of yards , and perhaps a mile , in height . Thinking of this picture , we see how very improbable it is that the question of interplanetary warfare can ever arise . Any races we encounter will almost certainly be ...
... certainly hundreds of yards , and perhaps a mile , in height . Thinking of this picture , we see how very improbable it is that the question of interplanetary warfare can ever arise . Any races we encounter will almost certainly be ...
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