The Exploration of SpaceHarper, 1959 - 200 pagini |
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Pagina 90
... interstellar gas " will be of no importance in travel between the planets , though , as we shall see in Chapter 16 , it might be significant when we begin to think of journeying to the stars . We mention it here because it raises again ...
... interstellar gas " will be of no importance in travel between the planets , though , as we shall see in Chapter 16 , it might be significant when we begin to think of journeying to the stars . We mention it here because it raises again ...
Pagina 171
... interstellar flights it would be neces- sary to start decelerating again well before the speed of light had been approached . As is now well known , at velocities approaching that of light some very peculiar things begin to happen ...
... interstellar flights it would be neces- sary to start decelerating again well before the speed of light had been approached . As is now well known , at velocities approaching that of light some very peculiar things begin to happen ...
Pagina 173
... interstellar travel . ( In this sense , of course , we on this planet are interstellar voyagers already - though our journey is involuntary and we know neither its destination nor its beginning . ) Such dirigible planetoids might travel ...
... interstellar travel . ( In this sense , of course , we on this planet are interstellar voyagers already - though our journey is involuntary and we know neither its destination nor its beginning . ) Such dirigible planetoids might travel ...
Cuprins
The Shaping of the Dream | 1 |
The Earth and Its Neighbors | 9 |
The Rocket | 17 |
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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 satellites 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