The Exploration of SpaceTemple Press, 1951 - 198 pagini |
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Pagina 76
... lunar spaceship would need is an interesting problem which cannot , perhaps , be completely solved until we know a good deal more about the surface of the Moon . By the time a landing is attempted we will certainly have large - scale ...
... lunar spaceship would need is an interesting problem which cannot , perhaps , be completely solved until we know a good deal more about the surface of the Moon . By the time a landing is attempted we will certainly have large - scale ...
Pagina 107
... lunar formation is the " rill " or " cleft " , of which several examples will be seen in Plate VII.2 Some of these fissures are of great size and would be impressive , if not indeed terrifying , spectacles to an observer on the Moon ...
... lunar formation is the " rill " or " cleft " , of which several examples will be seen in Plate VII.2 Some of these fissures are of great size and would be impressive , if not indeed terrifying , spectacles to an observer on the Moon ...
Pagina 108
... lunar gravity , if there were an atmosphere on the Moon its density would fall off with altitude much more slowly than does the Earth's . If Figure 2 were redrawn for the case of the Moon , the density lines would be about six times as ...
... lunar gravity , if there were an atmosphere on the Moon its density would fall off with altitude much more slowly than does the Earth's . If Figure 2 were redrawn for the case of the Moon , the density lines would be about six times as ...
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