The Exploration of SpaceHarper, 1959 - 200 pagini |
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Pagina 74
... certainly seem dangerous - not to mention hard on the nerves of the crew ! -to wait until the Moon was so close before doing any braking . Yet it would be quite safe , especially if there were even a small reserve power for increased ...
... certainly seem dangerous - not to mention hard on the nerves of the crew ! -to wait until the Moon was so close before doing any braking . Yet it would be quite safe , especially if there were even a small reserve power for increased ...
Pagina 88
... certainly not a serious danger ; men in stratosphere balloon flights have experienced high levels of radiation ( fifty or more times those at the Earth's surface ) for over a day , and the dog Laika in Sputnik II survived for a week in ...
... certainly not a serious danger ; men in stratosphere balloon flights have experienced high levels of radiation ( fifty or more times those at the Earth's surface ) for over a day , and the dog Laika in Sputnik II survived for a week in ...
Pagina 89
... certainly unnecessary to take any measures against the rare " giants , " an inch or more in diameter , since an average - sized space- ship would have to wait several million years before a collision occurred with such a monster . The ...
... certainly unnecessary to take any measures against the rare " giants , " an inch or more in diameter , since an average - sized space- ship would have to wait several million years before a collision occurred with such a monster . The ...
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