The Exploration of SpaceHarper, 1959 - 200 pagini |
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Pagina 116
... solar power plant , collecting the Sun's rays and focusing them on to boiler pipes which carry their heated contents to a turbine . The whole apparatus is pivoted so that it can follow the Sun around the sky . On the Moon , where ...
... solar power plant , collecting the Sun's rays and focusing them on to boiler pipes which carry their heated contents to a turbine . The whole apparatus is pivoted so that it can follow the Sun around the sky . On the Moon , where ...
Pagina 161
... Solar System to be something usual , or an astronomical freak . Until quite recently , the latter opinion was generally held , be- cause the only conditions under which anyone could imagine the Solar System forming seemed to demand very ...
... Solar System to be something usual , or an astronomical freak . Until quite recently , the latter opinion was generally held , be- cause the only conditions under which anyone could imagine the Solar System forming seemed to demand very ...
Pagina 176
... Solar System to be visited except at very rare intervals . The situation would not be greatly affected even if the speed of light were not a limiting factor . A man may walk the length of a beach in a few minutes - but how long would it ...
... Solar System to be visited except at very rare intervals . The situation would not be greatly affected even if the speed of light were not a limiting factor . A man may walk the length of a beach in a few minutes - but how long would it ...
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