The Exploration of SpaceTemple Press, 1951 - 198 pagini |
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Pagina 47
... able to increase rocket performances very greatly by the use of chemical fuels , there are reasons for believing that , in time , we will be able to harness atomic energy for rocket propulsion . This would certainly solve our ...
... able to increase rocket performances very greatly by the use of chemical fuels , there are reasons for believing that , in time , we will be able to harness atomic energy for rocket propulsion . This would certainly solve our ...
Pagina 99
... able to do this sort of thing , but for a long time to come it will remain pure fantasy . LA ( a ) ( b ) Figure 16. Producing " Artificial Gravity " • The other , and practical , solution involves the use of centrifugal force . Consider ...
... able to do this sort of thing , but for a long time to come it will remain pure fantasy . LA ( a ) ( b ) Figure 16. Producing " Artificial Gravity " • The other , and practical , solution involves the use of centrifugal force . Consider ...
Pagina 141
... able to exist on very cold worlds , they could hardly have originated there . The indigenous life would probably be based on low- temperature reactions and would not be much hotter than the surroundings . Yet from this type of organism ...
... able to exist on very cold worlds , they could hardly have originated there . The indigenous life would probably be based on low- temperature reactions and would not be much hotter than the surroundings . Yet from this type of organism ...
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