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 33
... planets or " asteroids , " few of which on this scale are much larger than grains of sand . We have to travel 483 miles from the Sun- 340 beyond Mars - before we meet Jupiter , the largest of all the planets . In our model it would be ...
... planets or " asteroids , " few of which on this scale are much larger than grains of sand . We have to travel 483 miles from the Sun- 340 beyond Mars - before we meet Jupiter , the largest of all the planets . In our model it would be ...
Pagina 154
... planets rather than their dimensions and distances apart - though it is worth looking at Figure 1 again to remind ourselves of these . For reasons which are still unknown , the planets ap- pear to form two quite distinct classes . On ...
... planets rather than their dimensions and distances apart - though it is worth looking at Figure 1 again to remind ourselves of these . For reasons which are still unknown , the planets ap- pear to form two quite distinct classes . On ...
Pagina 202
... planets . Unfor- tunately , the greatest of planets would be totally in- visible at a distance of a few light - years , so we have no means of telling if even Proxima Centauri has worlds revolving round it . Our views on the existence ...
... planets . Unfor- tunately , the greatest of planets would be totally in- visible at a distance of a few light - years , so we have no means of telling if even Proxima Centauri has worlds revolving round it . Our views on the existence ...
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