The Exploration of SpaceTemple Press, 1951 - 198 pagini |
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Pagina 43
... means first of all losing speed slightly to drop down towards the Sun , then slowing down a little more as one goes past its orbit to match one's velocity with the inner planet . In exactly the same way , going to an outer planet means ...
... means first of all losing speed slightly to drop down towards the Sun , then slowing down a little more as one goes past its orbit to match one's velocity with the inner planet . In exactly the same way , going to an outer planet means ...
Pagina 175
... means it would be necessary to have an extremely efficient source of nuclear energy : anything like our present atomic power plants would be completely useless . Some means would be required of releasing a large percentage of the energy ...
... means it would be necessary to have an extremely efficient source of nuclear energy : anything like our present atomic power plants would be completely useless . Some means would be required of releasing a large percentage of the energy ...
Pagina 189
... means of crossing space have become involved in current military research because in no other way could they find the necessary support . It is worth quoting here some words written by Professor von Braun on becoming an Honorary Fellow ...
... means of crossing space have become involved in current military research because in no other way could they find the necessary support . It is worth quoting here some words written by Professor von Braun on becoming an Honorary Fellow ...
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