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 79
... Perhaps the only time in our normal lives when we do experience a momentary feel- ing of near - weightlessness is in ... perhaps an unfortunate phrase because the word " fall " usually im- plies " downwards . " The spaceship , as we have ...
... Perhaps the only time in our normal lives when we do experience a momentary feel- ing of near - weightlessness is in ... perhaps an unfortunate phrase because the word " fall " usually im- plies " downwards . " The spaceship , as we have ...
Pagina 188
... ( perhaps only five hundred miles up ) whereas the astronomical ones would be at ten or a hundred times this distance . In this connection , however , it should be pointed out that it is much " cheaper , " in terms of energy , to ...
... ( perhaps only five hundred miles up ) whereas the astronomical ones would be at ten or a hundred times this distance . In this connection , however , it should be pointed out that it is much " cheaper , " in terms of energy , to ...
Pagina 224
... Perhaps one day men will no longer be interested in the unknown , no longer tantalized by mystery . This is possible , but when Man loses his curiosity one feels he will have lost most of the other things that make him human . The long ...
... Perhaps one day men will no longer be interested in the unknown , no longer tantalized by mystery . This is possible , but when Man loses his curiosity one feels he will have lost most of the other things that make him human . The long ...
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