The Exploration of SpaceTemple Press, 1951 - 198 pagini |
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Pagina 76
... interesting problem which cannot , perhaps , be completely solved until we know a good deal more about the surface of the Moon . By the time a landing is attempted we will certainly have large - scale photographs of the lunar plains and ...
... interesting problem which cannot , perhaps , be completely solved until we know a good deal more about the surface of the Moon . By the time a landing is attempted we will certainly have large - scale photographs of the lunar plains and ...
Pagina 98
... interesting and perhaps significant fact that people who for some reason are deprived of the use of these organs do not seem to suffer ill effects . They can also orientate them- selves correctly even under water , when there is no ...
... interesting and perhaps significant fact that people who for some reason are deprived of the use of these organs do not seem to suffer ill effects . They can also orientate them- selves correctly even under water , when there is no ...
Pagina 141
... interesting . After all , interplanetary travel would lose much of its point if the other planets were simply new editions of Earth ! It is well to remember that there are only three worlds in the Universe whose surfaces we can observe ...
... interesting . After all , interplanetary travel would lose much of its point if the other planets were simply new editions of Earth ! It is well to remember that there are only three worlds in the Universe whose surfaces we can observe ...
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