The Exploration of SpaceTemple Press, 1951 - 198 pagini |
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... imagine that , if one could make a workable pair of wings , they could be used to take one to the Moon . After Lucian , the theme of space - travel was neglected for almost fifteen hundred years . When it was again renewed , it was in a ...
... imagine that , if one could make a workable pair of wings , they could be used to take one to the Moon . After Lucian , the theme of space - travel was neglected for almost fifteen hundred years . When it was again renewed , it was in a ...
Pagina 135
... imagine . Yet it would be very unwise to rule it out as a long- term possibility . K It is on the twenty - seven satellites of the giant planets that the explorers of the next century may find landing - THE OUTER PLANETS 135.
... imagine . Yet it would be very unwise to rule it out as a long- term possibility . K It is on the twenty - seven satellites of the giant planets that the explorers of the next century may find landing - THE OUTER PLANETS 135.
Pagina 141
... imagine beings with tough , insulating skins through which the heat loss would be very small . As long as they had some source of energy - chemical , solar , perhaps even nuclear - and the necessary food , they could still survive ...
... imagine beings with tough , insulating skins through which the heat loss would be very small . As long as they had some source of energy - chemical , solar , perhaps even nuclear - and the necessary food , they could still survive ...
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