The Exploration of SpaceTemple Press, 1951 - 198 pagini |
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Pagina 35
... appears to be at about double the values we can achieve today , and some experts would put it considerably lower . Even taking the optimistic view , therefore , it appears that the maximum speed we can ever expect from single - stage ...
... appears to be at about double the values we can achieve today , and some experts would put it considerably lower . Even taking the optimistic view , therefore , it appears that the maximum speed we can ever expect from single - stage ...
Pagina 89
... appear to reach us from all directions . The only effect of the solar rays would be to warm the ship : they could not penetrate even the smallest thickness of hull . One precaution would be necessary to deal with them , for the ...
... appear to reach us from all directions . The only effect of the solar rays would be to warm the ship : they could not penetrate even the smallest thickness of hull . One precaution would be necessary to deal with them , for the ...
Pagina 135
... appear simply as dimensionless points of light in the telescope . The smaller asteroids are probably not even spherical , but are simply jagged lumps of rock - mountains wandering through space . Whether they will be of any interest to ...
... appear simply as dimensionless points of light in the telescope . The smaller asteroids are probably not even spherical , but are simply jagged lumps of rock - mountains wandering through space . Whether they will be of any interest to ...
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