The Exploration of SpaceTemple Press, 1951 - 198 pagini |
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Pagina 4
... discovered that its pull was much weaker , so that one could jump to great heights . This idea is now quite familiar to us , but Godwin was writing fifty years before Newton discovered the law of gravitation . The idea of lunar voyages ...
... discovered that its pull was much weaker , so that one could jump to great heights . This idea is now quite familiar to us , but Godwin was writing fifty years before Newton discovered the law of gravitation . The idea of lunar voyages ...
Pagina 138
... discovery of little Nereid in 1949 may expedite the formal christening of its big brother . Until 1930 , Neptune's orbit marked the frontier of the Solar System . In that year Pluto was discovered as a result of a long search by the ...
... discovery of little Nereid in 1949 may expedite the formal christening of its big brother . Until 1930 , Neptune's orbit marked the frontier of the Solar System . In that year Pluto was discovered as a result of a long search by the ...
Pagina 193
... discovered coming from Sun and stars , to the cosmic rays whose origin is still one of the prime mysteries of modern physics . These things we have discovered within the last generation , and we cannot guess what still lies beneath the ...
... discovered coming from Sun and stars , to the cosmic rays whose origin is still one of the prime mysteries of modern physics . These things we have discovered within the last generation , and we cannot guess what still lies beneath the ...
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