The Exploration of SpaceHarper, 1951 - 199 pagini |
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Pagina
... astronautics - the science of space - travel- but it was soon clear that it had a large sale among readers who were certainly less than enthusiastic about the details of mass- ratios , rocket fuel performances and the dynamics of orbits ...
... astronautics - the science of space - travel- but it was soon clear that it had a large sale among readers who were certainly less than enthusiastic about the details of mass- ratios , rocket fuel performances and the dynamics of orbits ...
Pagina 93
... 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 robots . As far as temperature and pressure are ...
... 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 robots . As far as temperature and pressure are ...
Pagina 189
... astronautics and are therefore still a considerable distance in the future . There is little doubt that a great many scientists and en- gineers whose only interest in the rocket is as a means of cross- ing space have become involved in ...
... astronautics and are therefore still a considerable distance in the future . There is little doubt that a great many scientists and en- gineers whose only interest in the rocket is as a means of cross- ing space have become involved in ...
Cuprins
The Shaping of the Dream | 1 |
The Earth and Its Neighbours | 7 |
The Rocket | 17 |
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Termeni și expresii frecvente
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