The Exploration of SpaceHarper, 1959 - 200 pagini |
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Pagina 66
... appear to be ample . It would also be necessary to remove excess water vapor from the air . This can be done by chemical means , but a simple and effective method is to pass the air through a chilled pipe and con- dense the water out of ...
... appear to be ample . It would also be necessary to remove excess water vapor from the air . This can be done by chemical means , but a simple and effective method is to pass the air through a chilled pipe and con- dense the water out of ...
Pagina 133
... appear simply as dimensionless points of light in the telescope . The smaller asteroids are probably not even spherical , but are simply jagged lumps of rock - mountains wander- ing through space . Whether they will be of any interest ...
... appear simply as dimensionless points of light in the telescope . The smaller asteroids are probably not even spherical , but are simply jagged lumps of rock - mountains wander- ing through space . Whether they will be of any interest ...
Pagina 171
... appear to be longer . Again the effect is very small at ordinary speeds but be- comes enormous as one nears the velocity of light . At this limiting speed , in fact , time would appear to stand still . It will be seen that this ...
... appear to be longer . Again the effect is very small at ordinary speeds but be- comes enormous as one nears the velocity of light . At this limiting speed , in fact , time would appear to stand still . It will be seen that this ...
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