The Exploration of SpaceHarper, 1959 - 200 pagini |
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Pagina 74
... less than two minutes after falling some eighty miles . ) The landing , like the take - off , would almost certainly be auto- matic . A radar altimeter would give the exact distance to the Moon as well as the rate of descent , and this ...
... less than two minutes after falling some eighty miles . ) The landing , like the take - off , would almost certainly be auto- matic . A radar altimeter would give the exact distance to the Moon as well as the rate of descent , and this ...
Pagina 79
... less than three , and would often be five , bright planets available for observation this is clearly a very useful method , as well as an extremely simple one . Figure 13. Position - finding in Space An alternative though less accurate ...
... less than three , and would often be five , bright planets available for observation this is clearly a very useful method , as well as an extremely simple one . Figure 13. Position - finding in Space An alternative though less accurate ...
Pagina 135
... less than a day . The cloud belts and oc- casional great atmospheric disturbances could be observed in minute detail and , as Mimas cannot have much weather of its own , would provide any inhabitants with an alternative and ...
... less than a day . The cloud belts and oc- casional great atmospheric disturbances could be observed in minute detail and , as Mimas cannot have much weather of its own , would provide any inhabitants with an alternative and ...
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