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 58
... body will never come back , but will creep over the top of the crater , as it were , and reach the horizontal level ( d ) . This velocity is 25,000 m.p.h. and is called " the velocity of escape . " If a body started up- wards with more ...
... body will never come back , but will creep over the top of the crater , as it were , and reach the horizontal level ( d ) . This velocity is 25,000 m.p.h. and is called " the velocity of escape . " If a body started up- wards with more ...
Pagina 96
... body floating in space at the Earth's distance from the Sun. One side will be in shadow , the other in full sunlight . This side will become extremely hot - at least if it is darkened and so readily absorbs heat waves . In the extreme ...
... body floating in space at the Earth's distance from the Sun. One side will be in shadow , the other in full sunlight . This side will become extremely hot - at least if it is darkened and so readily absorbs heat waves . In the extreme ...
Pagina 187
... body here , if originally above the Equator , would revolve with the Earth so that it would neither rise nor set . An object at a greater distance would move more slowly than the Earth on its axis and so would rise in the east and set ...
... body here , if originally above the Equator , would revolve with the Earth so that it would neither rise nor set . An object at a greater distance would move more slowly than the Earth on its axis and so would rise in the east and set ...
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