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 |
THE EARTH AND ITS NEIGHBOURS | 9 |
THE ROCKET | 17 |
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able acceleration actual already appear astronautics astronomers atmosphere atomic become body build carry certainly Chapter close completely consider considerable course deal developed difficult direction discovered discuss distance Earth effect energy escape exist exploration extremely fact fall field Figure fuel give given gravity greater heat human hundred idea imagine important impossible increase interesting interplanetary involved journey known landing least less light limit live look lunar Mars material matter means miles minutes Moon motors necessary never observed once orbit oxygen perhaps period planets Plate possible practical present pressure probably problem produce purely radio reach reason relatively remain rocket round satellite scientific seems seen ship shown simple Solar space spaceship speed stars stations structure surface telescope temperature thousand Universe velocity Venus weight whole