The Exploration of SpacePocket Books, 1979 - 237 pagini Presents a nonscientific explanation of space exploration and a view of future life on other planets. |
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Pagina 50
... oxygen to burn it with , stored in a second tank . ( Solid fuel rockets must also carry their oxygen , of course , but in this case it is already combined chemically in whatever explosive is employed . ) Many types of fuel have been ...
... oxygen to burn it with , stored in a second tank . ( Solid fuel rockets must also carry their oxygen , of course , but in this case it is already combined chemically in whatever explosive is employed . ) Many types of fuel have been ...
Pagina 94
... oxygen - the remaining four - fifths of nitrogen is simply " ballast " and plays no part in respiration . Thus the oxygen in the atmosphere contributes only three pounds to the total fifteen pounds of pressure - and if we used in the ...
... oxygen - the remaining four - fifths of nitrogen is simply " ballast " and plays no part in respiration . Thus the oxygen in the atmosphere contributes only three pounds to the total fifteen pounds of pressure - and if we used in the ...
Pagina 162
... oxygen . The oxygen has prob- ably not been lost : it is still there , locked up in the deserts which cover so much of the planet . Perhaps the Martian plants , if they really exist , can obtain the oxygen they need from the soil rather ...
... oxygen . The oxygen has prob- ably not been lost : it is still there , locked up in the deserts which cover so much of the planet . Perhaps the Martian plants , if they really exist , can obtain the oxygen they need from the soil rather ...
Cuprins
Preface to the 1951 Edition | 11 |
Thirty Years Later | 15 |
The Shaping of the Dream | 21 |
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acceleration airless already astronautics astronomers atmo atmosphere body bricks build carry certainly Chapter chemical completely conquest of space consider course crew degrees F difficult direction distance Earth energy enormous escape velocity exist exploration extremely fact Figure fuel Galaxy giant gravitational field gravity heat Hermann Oberth hundred miles idea imagine important interplanetary flight interplanetary travel interstellar ionosphere Jerry Pournelle journey Jupiter landing large number light light-years lunar Mars and Venus Martian means Mercury meteors miles in diameter million minutes missile Moon Moon's motors never normal observed once oxygen payload perhaps planetary planets Pluto possible pounds pressure probably problem produce propellant propulsion Proxima Centauri radar radio reach reason refueling rocket power satellite Saturn scientific ship Solar System space space-flight space-station space-suits space-travel spaceship speed spin stars stations surface take-off telescope temperature thousand thrust tion trolley voyage weight weightless