The Exploration of SpaceHarper, 1959 - 200 pagini |
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Pagina 7
... interplanetary flight . There are two very obvious reasons for this increase . In the first case , the conquest of the air had acted as a stimulus to imagination : in the second , the foundations of astronautics were being laid by ...
... interplanetary flight . There are two very obvious reasons for this increase . In the first case , the conquest of the air had acted as a stimulus to imagination : in the second , the foundations of astronautics were being laid by ...
Pagina 45
... interplanetary travel it would , almost inevi- tably , be fatal . We can now sum up the requirements for any interplanetary voyage , as follows : ( 1 ) The ship must build up sufficient speed to escape from the Earth , and when it has ...
... interplanetary travel it would , almost inevi- tably , be fatal . We can now sum up the requirements for any interplanetary voyage , as follows : ( 1 ) The ship must build up sufficient speed to escape from the Earth , and when it has ...
Pagina 84
... interplanetary purposes . Our " window " into space will pass an enormous band of radio frequencies , covering all the television and radar services , and in fact stretching , with only a few gaps , right down through the centimeter ...
... interplanetary purposes . Our " window " into space will pass an enormous band of radio frequencies , covering all the television and radar services , and in fact stretching , with only a few gaps , right down through the centimeter ...
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