The Exploration of SpaceTemple Press, 1951 - 198 pagini |
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Pagina 15
... Earth we may wish it had a much smaller value . Of all natural forces , gravity is the most universal and it dominates any discussion of space - flight . Here on the Earth's surface we can never escape from its influence , and its value ...
... Earth we may wish it had a much smaller value . Of all natural forces , gravity is the most universal and it dominates any discussion of space - flight . Here on the Earth's surface we can never escape from its influence , and its value ...
Pagina 61
... 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 after refuelling will descend on the Moon . 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 after refuelling will descend on the Moon . The ...
Pagina 151
... Earth so that it would neither rise nor set . An object at a greater distance would move more slowly than the Earth on its axis and so would rise in the east and set in the west , as do all the celestial bodies . Inside this limit of ...
... Earth so that it would neither rise nor set . An object at a greater distance would move more slowly than the Earth on its axis and so would rise in the east and set in the west , as do all the celestial bodies . Inside this limit of ...
Cuprins
Automatic Rocket Surveying Mars | 3 |
The Earth and its Neighbours | 9 |
The Rocket | 17 |
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acceleration already astronautics astronomers atmosphere 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 giant gravitational field gravity heat Hermann Oberth hundred miles idea imagine important interplanetary flight interplanetary travel interstellar involved ionosphere journey Jupiter landing light light-years lunar Mars and Venus Martian means Mercury meteors million 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