The Exploration of SpaceHarper, 1951 - 199 pagini |
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Pagina 66
... pressurised system . Fortunately , there is no difficulty in doing this . Our normal air is only one - fifth oxygen — the remaining four - fifths of nitrogen is simply " ballast " and plays no part in respiration . Thus the oxygen in ...
... pressurised system . Fortunately , there is no difficulty in doing this . Our normal air is only one - fifth oxygen — the remaining four - fifths of nitrogen is simply " ballast " and plays no part in respiration . Thus the oxygen in ...
Pagina 113
... pressurised building or hut . This would probably be made of reinforced fabric or plastic material , blown up to form a hemispherical chamber and fitted with a small air- lock . The whole thing would look very much like an Esquimo igloo ...
... pressurised building or hut . This would probably be made of reinforced fabric or plastic material , blown up to form a hemispherical chamber and fitted with a small air- lock . The whole thing would look very much like an Esquimo igloo ...
Pagina 131
... pressurised , oxygenated cities . Here , of course , we enter the realm of pure speculation and one person's guess is as good as another's . It is advisable not to be too dog- matic about Mars at the present time , for when the next ...
... pressurised , oxygenated cities . Here , of course , we enter the realm of pure speculation and one person's guess is as good as another's . It is advisable not to be too dog- matic about Mars at the present time , for when the next ...
Cuprins
The Shaping of the Dream | 1 |
The Earth and Its Neighbours | 7 |
The Rocket | 17 |
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acceleration already asteroids astronautics astronomers atmosphere body bricks 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 giant gravitational field gravity heat Hermann Oberth hundred miles idea imagine important interplanetary flight interplanetary travel interstellar ionosphere journey Jupiter landing light light-years lunar Mare Imbrium Mars and Venus Martian means Mercury meteors million 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 tion trolley Uranus voyage weight