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 33
... 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 the crater ( i.e. near 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 the crater ( i.e. near the ...
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 ...
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