The Exploration of SpaceTemple Press, 1951 - 198 pagini |
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Pagina 69
... periods of darkness , and this could best be obtained by the combustion of fuel in a small heater . In general , it can be said that temperature control does not present very great problems on the voyages which we will be undertaking ...
... periods of darkness , and this could best be obtained by the combustion of fuel in a small heater . In general , it can be said that temperature control does not present very great problems on the voyages which we will be undertaking ...
Pagina 83
... period of powered flight . It might then become necessary to alter the ship's course in speed , direction , or both , to correct for this . We have already pointed out , on page 73 , that the actual orientation or attitude of a ...
... period of powered flight . It might then become necessary to alter the ship's course in speed , direction , or both , to correct for this . We have already pointed out , on page 73 , that the actual orientation or attitude of a ...
Pagina 192
... period of Man's existence , and the stamp the length of time during which he has been slightly civilised . The period during which life will be possible on Earth corresponds to a further column of stamps certainly hundreds of yards ...
... period of Man's existence , and the stamp the length of time during which he has been slightly civilised . The period during which life will be possible on Earth corresponds to a further column of stamps certainly hundreds of yards ...
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