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 25
... idea is now quite familiar to us , but Godwin was writing fifty years before Newton discovered the law of gravitation . The idea of lunar voyages was now becoming popu- lar , and in 1640 Bishop Wilkins published a very important book A ...
... idea is now quite familiar to us , but Godwin was writing fifty years before Newton discovered the law of gravitation . The idea of lunar voyages was now becoming popu- lar , and in 1640 Bishop Wilkins published a very important book A ...
Pagina 156
... idea is that , if this were true , one would hardly expect clouds of such dazzling whiteness - they would surely be brown or dirty grey . The fact that Venus turns slowly on her axis is proved by measurements of the heat emitted by the ...
... idea is that , if this were true , one would hardly expect clouds of such dazzling whiteness - they would surely be brown or dirty grey . The fact that Venus turns slowly on her axis is proved by measurements of the heat emitted by the ...
Pagina 213
... idea does not involve any mathematical or physical impossibilities , and the feat would not re- quire too enormous amounts of fuel if the total con- version of mass into energy could be achieved . Al- though , at the moment , we have no ...
... idea does not involve any mathematical or physical impossibilities , and the feat would not re- quire too enormous amounts of fuel if the total con- version of mass into energy could be achieved . Al- though , at the moment , we have no ...
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