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 90
... energy for propulsion , some of the intermediate stages may be rendered unnecessary and the whole progress of space- travel accelerated . Many authorities believe that such a development is highly probable , but it cannot yet be ...
... energy for propulsion , some of the intermediate stages may be rendered unnecessary and the whole progress of space- travel accelerated . Many authorities believe that such a development is highly probable , but it cannot yet be ...
Pagina 91
... energy we need can be carried in quite a small atomic pile , for nuclear reactions liberate something like a million times the energy of chemical reactions . It is now possible to build piles ( employing enriched uranium instead of the ...
... energy we need can be carried in quite a small atomic pile , for nuclear reactions liberate something like a million times the energy of chemical reactions . It is now possible to build piles ( employing enriched uranium instead of the ...
Pagina 215
... energy : the only problem was to obtain this energy , and like all purely technical problems this was eventually solved . But even the disintegration of all the matter in the Universe would not provide enough energy to enable a ...
... energy : the only problem was to obtain this energy , and like all purely technical problems this was eventually solved . But even the disintegration of all the matter in the Universe would not provide enough energy to enable a ...
Cuprins
Preface to the 1951 Edition | 11 |
Thirty Years Later | 15 |
The Shaping of the Dream | 21 |
Drept de autor | |
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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