The Exploration of SpaceTemple Press, 1951 - 198 pagini |
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Pagina 33
... orbit as it circles the Earth . And in just the same way the planets revolve round the Sun , prisoners of its gravitational field yet always maintaining their distance . The speed necessary to move in such an orbit near the bottom of ...
... orbit as it circles the Earth . And in just the same way the planets revolve round the Sun , prisoners of its gravitational field yet always maintaining their distance . The speed necessary to move in such an orbit near the bottom of ...
Pagina 61
... orbit , so that they can break away from the Earth , make a reconnaissance of the Moon , and return to the Earth orbit . ( 5 ) The type of ship designed for a lunar landing will be flown up from Earth or assembled in free orbit , and ...
... orbit , so that they can break away from the Earth , make a reconnaissance of the Moon , and return to the Earth orbit . ( 5 ) The type of ship designed for a lunar landing will be flown up from Earth or assembled in free orbit , and ...
Pagina 77
... orbit similar to that which it traversed on the outward voyage , and taking the same time - five days . This would be the simplest procedure , if the ship carried sufficient fuel . On the other hand , it is more than likely that the ...
... orbit similar to that which it traversed on the outward voyage , and taking the same time - five days . This would be the simplest procedure , if the ship carried sufficient fuel . On the other hand , it is more than likely that 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