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 |
Automatic Rocket Surveying Mars | 4 |
THE EARTH AND ITS NEIGHBOURS | 9 |
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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