The Exploration of SpaceHarper, 1959 - 200 pagini |
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... perhaps above all others that the modern world can give , should convince any unbiased mind that we are already far closer in time to the first spaceship than to the first airplane . In writing this book I have tried to anticipate all ...
... perhaps above all others that the modern world can give , should convince any unbiased mind that we are already far closer in time to the first spaceship than to the first airplane . In writing this book I have tried to anticipate all ...
Pagina 50
... Perhaps the only time in our normal lives when we do experience a momentary feeling of near weightlessness is in a high - speed elevator , just as it begins its descent . Parachute jumpers also know it , for a fraction of a second ...
... Perhaps the only time in our normal lives when we do experience a momentary feeling of near weightlessness is in a high - speed elevator , just as it begins its descent . Parachute jumpers also know it , for a fraction of a second ...
Pagina 186
... perhaps the most exciting of all the possibilities revealed by astronautics . Whether or not Man is alone in the Universe is one of the supreme questions of philosophy . It is difficult to imagine that anyone could fail to be interested ...
... perhaps the most exciting of all the possibilities revealed by astronautics . Whether or not Man is alone in the Universe is one of the supreme questions of philosophy . It is difficult to imagine that anyone could fail to be interested ...
Cuprins
The Shaping of the Dream | 1 |
Navigation and Communication in Space | 78 |
1 | 118 |
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acceleration airless asteroids astronautics astronomers atmosphere body bricks build carry certainly Chapter chemical completely course crew diameter difficult distance Earth energy engineering enormous escape velocity exploration extremely fact Figure free orbit fuel Galaxy gases gravitational field gravity heat hundred hydrogen imagine important interplanetary flight interplanetary travel interstellar ionosphere journey Jupiter landing LEWIS CARROLL light light-years lunar Mars and Venus Martian means Mercury meteors miles million minutes missiles Moon Moon's motors never normal observed orbit oxygen payload perhaps planetary Plate Pluto possible pounds pressure probably problem produce propellant propulsion Proxima Centauri R. A. Smith radar radiation radio reach reason refueling rocket power satellite Saturn scientific ship Solar System space space-flight space-stations space-suits space-travel spaceship speed spinning stars stations structure sunlight surface take-off tanks telescope temperature thousand thrust trolley Uranus vehicle voyage weight weightless