The Exploration of SpaceTemple Press, 1951 - 198 pagini |
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Pagina 123
... seem very unlikely , as we would have detected the resulting water vapour in the atmosphere . There is probably no ... seems contrary to what one would expect from theory . All the planets appear to have been formed at about the same ...
... seem very unlikely , as we would have detected the resulting water vapour in the atmosphere . There is probably no ... seems contrary to what one would expect from theory . All the planets appear to have been formed at about the same ...
Pagina 166
... seems too small to be a sun and may therefore be a very large planet . There is clearly no hope of detecting worlds as small as Earth by the gravitational disturbances they produce , but if we can discover even a few giant planets by ...
... seems too small to be a sun and may therefore be a very large planet . There is clearly no hope of detecting worlds as small as Earth by the gravitational disturbances they produce , but if we can discover even a few giant planets by ...
Pagina 182
Arthur Charles Clarke. reasonable attitude towards them would seem to be one of open- minded scepticism . It certainly seems very probable that there can be no other technically advanced civilisation in the Solar System at the present ...
Arthur Charles Clarke. reasonable attitude towards them would seem to be one of open- minded scepticism . It certainly seems very probable that there can be no other technically advanced civilisation in the Solar System at the present ...
Cuprins
FRONTISPIECE Automatic Rocket Surveying Mars PLATE I HighAltitude ManCarrying Rocket | 3 |
Spaceships Refuelling In Free Orbit | 4 |
The Earth and its Neighbours | 9 |
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acceleration already asteroids astronautics astronomers atmosphere body bricks build carry certainly Chapter chemical climb completely course crew degrees F difficult direction distance Earth energy enormous escape velocity exploration extremely fact Figure flywheel free orbit fuel Galaxy giant gravitational field gravity heat Hermann Oberth hundred miles 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 Propontis 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