The Exploration of SpaceTemple Press, 1951 - 198 pagini |
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Pagina 15
... practical example of the saying that nothing succeeds like success . ) As far as gravity is concerned , leaving the Earth is rather like climbing a hill which at first is very steep but later becomes more and more gentle until finally ...
... practical example of the saying that nothing succeeds like success . ) As far as gravity is concerned , leaving the Earth is rather like climbing a hill which at first is very steep but later becomes more and more gentle until finally ...
Pagina 88
... practical as the White Knight's scheme for spiked anklets to protect his horse's feet from shark bites . Meteors are so tiny that no radar system could detect them more than a fraction of a second before impact — a warning period which ...
... practical as the White Knight's scheme for spiked anklets to protect his horse's feet from shark bites . Meteors are so tiny that no radar system could detect them more than a fraction of a second before impact — a warning period which ...
Pagina 182
... practical policy on the national or the cosmic scale . And when the first contact with the outer universe is made , one would like to think that Mankind played an active and not merely a passive rôle - that we were the discoverers , not ...
... practical policy on the national or the cosmic scale . And when the first contact with the outer universe is made , one would like to think that Mankind played an active and not merely a passive rôle - that we were the discoverers , not ...
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