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 |
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