The Exploration of SpaceTemple Press, 1951 - 198 pagini |
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Pagina 15
... distance --and should help to dispel the surprisingly common impression that it simply finishes when one is still quite close to the Earth . purposes it 1 TON Ε ΤΟΝ 41 CWT . MILES 50 000 THE EARTH AND ITS NEIGHBOURS 15.
... distance --and should help to dispel the surprisingly common impression that it simply finishes when one is still quite close to the Earth . purposes it 1 TON Ε ΤΟΝ 41 CWT . MILES 50 000 THE EARTH AND ITS NEIGHBOURS 15.
Pagina 69
... close orbit - there would be no solar radiation at all . This last condition would also apply at night on an airless world such as the Moon . It appears , therefore , that the ship should have some simple but efficient means of ...
... close orbit - there would be no solar radiation at all . This last condition would also apply at night on an airless world such as the Moon . It appears , therefore , that the ship should have some simple but efficient means of ...
Pagina 124
... close at hand . That it was relatively close they would have realised after a few days ' observations , for it would be shifting rapidly against the fixed background of the Milky Way . After several months they would know that the ...
... close at hand . That it was relatively close they would have realised after a few days ' observations , for it would be shifting rapidly against the fixed background of the Milky Way . After several months they would know that the ...
Cuprins
THE SHAPING OF THE DREAM | 1 |
Automatic Rocket Surveying Mars | 4 |
THE EARTH AND ITS NEIGHBOURS | 9 |
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Termeni și expresii frecvente
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