The Exploration of SpaceTemple Press, 1951 - 198 pagini |
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Pagina 133
... asteroids ( an unfortunate word , as it means literally " little stars " ) the largest of these worlds is only 480 miles in diameter , and the smallest we can detect cannot be more than a mile or two across . They have orbits of every ...
... asteroids ( an unfortunate word , as it means literally " little stars " ) the largest of these worlds is only 480 miles in diameter , and the smallest we can detect cannot be more than a mile or two across . They have orbits of every ...
Pagina 135
... asteroids are probably not even spherical , but are simply jagged lumps of rock - mountains wandering through space . Whether they will be of any interest to astronautics , only the future can tell . Although so many thousands of them ...
... asteroids are probably not even spherical , but are simply jagged lumps of rock - mountains wandering through space . Whether they will be of any interest to astronautics , only the future can tell . Although so many thousands of them ...
Pagina 161
... asteroids or small moons which might provide a foundation on which to work and could also supply much of the necessary structural material . In this case , there would be little distinction between a space - station and a planetary ...
... asteroids or small moons which might provide a foundation on which to work and could also supply much of the necessary structural material . In this case , there would be little distinction between a space - station and a planetary ...
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