The Exploration of SpaceHarper, 1959 - 200 pagini |
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Pagina 111
... probably be to erect as tall an antenna system as possible , as is shown in Plate VII . A fifty - foot mast would give a radio range of about six miles , though this might be greatly extended if the Moon has an ionosphere . Since a ...
... probably be to erect as tall an antenna system as possible , as is shown in Plate VII . A fifty - foot mast would give a radio range of about six miles , though this might be greatly extended if the Moon has an ionosphere . Since a ...
Pagina 115
... probably operated electrically . If one wished to project anything away from the Moon , it would be much more economical to do this by means of a fixed ground installation ( which could also have no restrictions on weight ) than by any ...
... probably operated electrically . If one wished to project anything away from the Moon , it would be much more economical to do this by means of a fixed ground installation ( which could also have no restrictions on weight ) than by any ...
Pagina 151
... probably be in the closest and hence most economical orbits . They might eventually become very extensive affairs - real " space - ports " with elaborate harbor facilities and huge hangars which could be pressurized to assist repair ...
... probably be in the closest and hence most economical orbits . They might eventually become very extensive affairs - real " space - ports " with elaborate harbor facilities and huge hangars which could be pressurized to assist repair ...
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