The Exploration of SpaceHarper, 1959 - 200 pagini |
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Pagina 8
... our satellite , the romantic writers will have lost the Moon : but it will be a small sacrifice , for the Universe will still remain as their playground . Chapter Two THE EARTH AND ITS NEIGHBORS Beneath , the 8 The Exploration of Space.
... our satellite , the romantic writers will have lost the Moon : but it will be a small sacrifice , for the Universe will still remain as their playground . Chapter Two THE EARTH AND ITS NEIGHBORS Beneath , the 8 The Exploration of Space.
Pagina 49
... remain safely in its orbit for as long as required . " This level need be little more than a hundred miles up for a rocket which had to circle the Earth for not more than a few days . In the case of a permanent structure , like the ...
... remain safely in its orbit for as long as required . " This level need be little more than a hundred miles up for a rocket which had to circle the Earth for not more than a few days . In the case of a permanent structure , like the ...
Pagina 107
... remain speculation . One of the most curious — and tantalizing - facts about the Moon is that , since it always keeps the same face turned towards us , we can never observe its other side . This absence of rotation relative to us means ...
... remain speculation . One of the most curious — and tantalizing - facts about the Moon is that , since it always keeps the same face turned towards us , we can never observe its other side . This absence of rotation relative to us means ...
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