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 38
... gravity . If gravity were weaker by a factor of four or five , the atmosphere would have es- caped into space - as has happened in the case of the Moon . So we can be thankful for gravity in this respect , even though when we ...
... gravity . If gravity were weaker by a factor of four or five , the atmosphere would have es- caped into space - as has happened in the case of the Moon . So we can be thankful for gravity in this respect , even though when we ...
Pagina 79
... gravity with distance from the Earth . One could , and usually would , feel weightless in a rocket a couple of hundred miles up , where the force of gravity is practically the same as here on the Earth's surface . The reason for this ...
... gravity with distance from the Earth . One could , and usually would , feel weightless in a rocket a couple of hundred miles up , where the force of gravity is practically the same as here on the Earth's surface . The reason for this ...
Pagina 128
... gravity . The only thing we can do is to look carefully at the functioning of the body , decide how gravity affects the various organs and phys- ical processes , and then imagine what would happen if it were removed . The problem is ...
... gravity . The only thing we can do is to look carefully at the functioning of the body , decide how gravity affects the various organs and phys- ical processes , and then imagine what would happen if it were removed . The problem is ...
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