The Exploration of SpaceHarper, 1959 - 200 pagini |
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Pagina 74
... spaceship would need is an interesting problem which cannot , perhaps , be completely solved until we know a good deal more about the surface of the Moon . By the time a landing is attempted we will certainly 74 The Exploration of Space.
... spaceship would need is an interesting problem which cannot , perhaps , be completely solved until we know a good deal more about the surface of the Moon . By the time a landing is attempted we will certainly 74 The Exploration of Space.
Pagina 96
... interesting and perhaps significant fact that people who for some reason are deprived of the use of these organs do not seem to suffer ill effects . They can also orient themselves correctly even under water , when there is no sensation ...
... interesting and perhaps significant fact that people who for some reason are deprived of the use of these organs do not seem to suffer ill effects . They can also orient themselves correctly even under water , when there is no sensation ...
Pagina 125
... interesting areas of Mars are the dark regions , which show seasonal changes linked with the melting of the polar caps . The early observers made the fairly natural assumption that these regions were seas , and christened them " Maria ...
... interesting areas of Mars are the dark regions , which show seasonal changes linked with the melting of the polar caps . The early observers made the fairly natural assumption that these regions were seas , and christened them " Maria ...
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