The Exploration of SpaceHarper, 1959 - 200 pagini |
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Pagina 26
... important role in the con- quest of space , as the various Moon shots and planetary probes have now demonstrated . The " exhaust speed " of modern liquid - fueled rockets is of the order of 5,000 mph or even higher . Reverting to our ...
... important role in the con- quest of space , as the various Moon shots and planetary probes have now demonstrated . The " exhaust speed " of modern liquid - fueled rockets is of the order of 5,000 mph or even higher . Reverting to our ...
Pagina 158
... important as the original , natural planets . In his book The World , The Flesh , and The Devil ( one of the most ... importance because - as Bernal was again the first to point out - they might provide one solution to the exceedingly ...
... important as the original , natural planets . In his book The World , The Flesh , and The Devil ( one of the most ... importance because - as Bernal was again the first to point out - they might provide one solution to the exceedingly ...
Pagina 171
... important as one nears the velocity of light , and at that speed the mass of any object would become infinite . This , of course , is merely another way of saying that the velocity of light can be approached as closely as one pleases ...
... important as one nears the velocity of light , and at that speed the mass of any object would become infinite . This , of course , is merely another way of saying that the velocity of light can be approached as closely as one pleases ...
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