The Exploration of SpaceHarper, 1951 - 199 pagini |
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Pagina 47
... able to increase rocket performances very greatly by the use of chemical fuels , there are reasons for believing that , in time , we will be able to harness atomic energy for rocket propulsion . This would certainly solve our diffi ...
... able to increase rocket performances very greatly by the use of chemical fuels , there are reasons for believing that , in time , we will be able to harness atomic energy for rocket propulsion . This would certainly solve our diffi ...
Pagina 93
... able to solve the purely engineering problems of astronautics , unless we can overcome the physiological ones as well we will be doomed to remain for ever on our native planet , able to look at other worlds only through the eyes of our ...
... able to solve the purely engineering problems of astronautics , unless we can overcome the physiological ones as well we will be doomed to remain for ever on our native planet , able to look at other worlds only through the eyes of our ...
Pagina 130
... able to see , from Earth , the reflected sunlight in lakes at such high latitudes , so the test mentioned above cannot be applied to these regions . One is tempted to assume that the dark areas of the planet may be the beds of long ...
... able to see , from Earth , the reflected sunlight in lakes at such high latitudes , so the test mentioned above cannot be applied to these regions . One is tempted to assume that the dark areas of the planet may be the beds of long ...
Cuprins
The Shaping of the Dream | 1 |
The Earth and Its Neighbours | 7 |
The Rocket | 17 |
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acceleration already asteroids astronautics astronomers atmosphere body bricks build carry certainly Chapter chemical completely course crew degrees F difficult direction distance Earth energy enormous escape velocity exploration extremely fact Figure free orbit fuel Galaxy giant gravitational field gravity heat Hermann Oberth hundred miles idea imagine important interplanetary flight interplanetary travel interstellar ionosphere journey Jupiter landing light light-years lunar Mare Imbrium Mars and Venus Martian means Mercury meteors million minutes missile Moon Moon's motors never observed oxygen payload perhaps planetary planets Pluto possible pounds pressure pressurised probably problem produce propellant propulsion Proxima Centauri R. A. Smith radar radiation radio reach reason refuelling return to Earth rocket power satellite Saturn scientific ship Solar System space space-flight space-station space-suits space-travel spaceship speed spinning stars stations surface take-off telescope temperature terrestrial thousand thrust tion trolley Uranus voyage weight