The Exploration of SpaceHarper, 1959 - 200 pagini |
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Pagina 125
... Martian deserts are probably fairly flat , for we should be able to detect any high mountains by the irregularities they would cause on the line between night and day . There is , however , no reason why hills or plateaus a mile or two ...
... Martian deserts are probably fairly flat , for we should be able to detect any high mountains by the irregularities they would cause on the line between night and day . There is , however , no reason why hills or plateaus a mile or two ...
Pagina 126
... Martian atmosphere con- sisted entirely of pure oxygen we could not survive in it . The fact that it contains virtually no oxygen at all rules out any forms of animal life resembling those on Earth . It is probable that the bulk of the ...
... Martian atmosphere con- sisted entirely of pure oxygen we could not survive in it . The fact that it contains virtually no oxygen at all rules out any forms of animal life resembling those on Earth . It is probable that the bulk of the ...
Pagina 127
... Martian plants , if they really exist , can obtain the oxygen they need from the soil rather than from the atmosphere . It should be remembered that the other basic raw materials for plant life are carbon dioxide , water , and sunlight ...
... Martian plants , if they really exist , can obtain the oxygen they need from the soil rather than from the atmosphere . It should be remembered that the other basic raw materials for plant life are carbon dioxide , water , and sunlight ...
Cuprins
The Shaping of the Dream | 1 |
Navigation and Communication in Space | 78 |
1 | 118 |
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acceleration airless asteroids astronautics astronomers atmosphere body bricks build carry certainly Chapter chemical completely course crew diameter difficult distance Earth energy engineering enormous escape velocity exploration extremely fact Figure free orbit fuel Galaxy gases gravitational field gravity heat hundred hydrogen imagine important interplanetary flight interplanetary travel interstellar ionosphere journey Jupiter landing LEWIS CARROLL light light-years lunar Mars and Venus Martian means Mercury meteors miles million minutes missiles Moon Moon's motors never normal observed orbit oxygen payload perhaps planetary Plate Pluto possible pounds pressure probably problem produce propellant propulsion Proxima Centauri R. A. Smith radar radiation radio reach reason refueling rocket power satellite Saturn scientific ship Solar System space space-flight space-stations space-suits space-travel spaceship speed spinning stars stations structure sunlight surface take-off tanks telescope temperature thousand thrust trolley Uranus vehicle voyage weight weightless