The Exploration of SpaceHarper, 1959 - 200 pagini |
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Pagina 74
... close before doing any braking . Yet it would be quite safe , especially if there were even a small reserve power for increased deceleration . ( At 2 G , which is still a modest figure , the ship could be brought completely to rest in ...
... close before doing any braking . Yet it would be quite safe , especially if there were even a small reserve power for increased deceleration . ( At 2 G , which is still a modest figure , the ship could be brought completely to rest in ...
Pagina 122
... close at hand . That it was relatively close they would have realized after a few days ' observations , for it would be shifting rapidly against the fixed background of the Milky Way . After several months they would know that the ...
... close at hand . That it was relatively close they would have realized after a few days ' observations , for it would be shifting rapidly against the fixed background of the Milky Way . After several months they would know that the ...
Pagina 163
... close together that their gravitational fields distort them into ellipses , the longer axes point- ing towards each other . Linking the two stars is a bridge of incan- descent hydrogen , which sprays out from the central sun towards its ...
... close together that their gravitational fields distort them into ellipses , the longer axes point- ing towards each other . Linking the two stars is a bridge of incan- descent hydrogen , which sprays out from the central sun towards its ...
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