The Exploration of SpaceTemple Press, 1951 - 198 pagini |
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Pagina 62
Arthur Charles Clarke. made to refuel rockets for the journeys to Mars and Venus . Although the power requirements are not much greater than for the lunar voyage , the duration of flight ( 145 days to Venus , 240-250 days to Mars ) would ...
Arthur Charles Clarke. made to refuel rockets for the journeys to Mars and Venus . Although the power requirements are not much greater than for the lunar voyage , the duration of flight ( 145 days to Venus , 240-250 days to Mars ) would ...
Pagina 125
... Mars , we are not confronted with impenetrable clouds : we can see the actual surface of the planet and can make maps of its main features . Moreover , when it is nearest to us Mars turns its illuminated face full towards the Earth ...
... Mars , we are not confronted with impenetrable clouds : we can see the actual surface of the planet and can make maps of its main features . Moreover , when it is nearest to us Mars turns its illuminated face full towards the Earth ...
Pagina 127
... Mars is a world which has , literally , rusted away . The Martian deserts are probably fairly flat , for we should be able to detect any high mountains by the irregularities they would cause on the line between night and day . There is ...
... Mars is a world which has , literally , rusted away . The Martian deserts are probably fairly flat , for we should be able to detect any high mountains by the irregularities they would cause on the line between night and day . There is ...
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