The Exploration of SpaceTemple Press, 1951 - 198 pagini |
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Pagina 108
... completely airless , nor can we be sure that it is completely waterless . Water cannot exist in the liquid state under such low pressure , it is true , but hoar - frost might reasonably be expected to form in the night as a temporary ...
... completely airless , nor can we be sure that it is completely waterless . Water cannot exist in the liquid state under such low pressure , it is true , but hoar - frost might reasonably be expected to form in the night as a temporary ...
Pagina 141
... completely alien environment . In the same manner , carbon life based upon water could conceivably exist even on the frozen outer worlds . One can imagine beings with tough , insulating skins through which the heat loss would be very ...
... completely alien environment . In the same manner , carbon life based upon water could conceivably exist even on the frozen outer worlds . One can imagine beings with tough , insulating skins through which the heat loss would be very ...
Pagina 179
... completely weightless . To take an even more extreme case , the very dense dwarf star Sirius B has a surface gravity at least 20,000 times as intense as the Earth's . Falling in such a field one would be accelerating more rapidly than a ...
... completely weightless . To take an even more extreme case , the very dense dwarf star Sirius B has a surface gravity at least 20,000 times as intense as the Earth's . Falling in such a field one would be accelerating more rapidly than a ...
Cuprins
THE SHAPING OF THE DREAM | 1 |
Automatic Rocket Surveying Mars | 4 |
THE EARTH AND ITS NEIGHBOURS | 9 |
Drept de autor | |
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acceleration already astronautics astronomers atmosphere atomic rockets body bricks British Astronomical Association build carry certainly Chapter chemical completely course crew degrees F difficult direction distance Earth energy enormous escape velocity exploration extremely fact Figure free orbit fuel Galaxy gravitational field gravity heat Hermann Oberth hundred miles idea imagine important interplanetary flight interplanetary travel interstellar ionosphere journey Jupiter landing light light-years lunar Mars and Venus Martian means Mercury meteors minutes missile Moon Moon's motors never observed oxygen payload perhaps planetary planets Pluto possible pounds pressure pressurised probably problem produce propellant propulsion Proxima Centauri R. A. Smith radar radiation radio reach reason refuelling return to Earth rocket power satellite Saturn scientific ship Solar System space space-flight space-station space-suits space-travel spaceship speed spinning stars stations surface take-off telescope temperature terrestrial thousand thrust trolley Uranus voyage weight