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 131
... Mars more quickly than Mars revolves on its axis , it rises in the west and sets in the east . Much of the time it must be eclipsed by the shadow of the planet , and as it would be about a quarter the apparent size of our Moon it would ...
... Mars more quickly than Mars revolves on its axis , it rises in the west and sets in the east . Much of the time it must be eclipsed by the shadow of the planet , and as it would be about a quarter the apparent size of our Moon it would ...
Cuprins
FRONTISPIECE Automatic Rocket Surveying Mars PLATE I HighAltitude ManCarrying Rocket | 3 |
Spaceships Refuelling In Free Orbit | 4 |
The Earth and its Neighbours | 9 |
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acceleration already asteroids astronautics astronomers atmosphere body bricks build carry certainly Chapter chemical climb completely course crew degrees F difficult direction distance Earth energy enormous escape velocity exploration extremely fact Figure flywheel free orbit fuel Galaxy giant gravitational field gravity heat Hermann Oberth hundred miles imagine important interplanetary flight interplanetary travel interstellar involved ionosphere journey Jupiter landing light light-years lunar Mars and Venus Martian means Mercury meteors million minutes missile Moon Moon's motors never observed oxygen payload perhaps planetary planets Pluto possible pounds pressure pressurised probably problem produce propellant Propontis 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