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 67
... field ) the rocket would gain speed and , at the moment of impact , would be traveling at over 5,000 m.p.h. It will be seen , however , that if it was not aimed directly at the Moon but a little to one side , and if some judicious ...
... field ) the rocket would gain speed and , at the moment of impact , would be traveling at over 5,000 m.p.h. It will be seen , however , that if it was not aimed directly at the Moon but a little to one side , and if some judicious ...
Pagina 71
... field . It is extremely fortunate for astronautics that , at the distances of the planets from the Sun , the " slope " of this field is relatively gentle , and so little energy is needed to move along it . In most cases , in fact , much ...
... field . It is extremely fortunate for astronautics that , at the distances of the planets from the Sun , the " slope " of this field is relatively gentle , and so little energy is needed to move along it . In most cases , in fact , much ...
Pagina 215
... field one would be accelerating more rapidly than a shell while it was being fired from a gun , but there would be no feeling of strain whatsoever . If we can ever generate the equivalent of a controlled gravitational field we shall ...
... field one would be accelerating more rapidly than a shell while it was being fired from a gun , but there would be no feeling of strain whatsoever . If we can ever generate the equivalent of a controlled gravitational field we shall ...
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