The Exploration of SpaceTemple Press, 1951 - 198 pagini |
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Pagina 165
... Solar System to be something usual , or an astronomical freak . Until quite recently , the latter opinion was generally held , because the only conditions under which anyone could imagine the Solar System forming seemed to demand very ...
... Solar System to be something usual , or an astronomical freak . Until quite recently , the latter opinion was generally held , because the only conditions under which anyone could imagine the Solar System forming seemed to demand very ...
Pagina 182
... Solar System at the present moment , otherwise we would indeed have had every reason to expect visitors . But during the millions of years that lie behind us -- who knows ? Life may have come and gone and come again on our neighbours ...
... Solar System at the present moment , otherwise we would indeed have had every reason to expect visitors . But during the millions of years that lie behind us -- who knows ? Life may have come and gone and come again on our neighbours ...
Pagina 197
... Solar System and individual names ) ancient ideas concerning , I colonising , 144-9 exploring , 142-3 of other suns , 165-6 , 169 , 171-2 Pluto , 138 Radar for lunar landing , 75 for meteor detection , 88 Radio communication by , 85-8 ...
... Solar System and individual names ) ancient ideas concerning , I colonising , 144-9 exploring , 142-3 of other suns , 165-6 , 169 , 171-2 Pluto , 138 Radar for lunar landing , 75 for meteor detection , 88 Radio communication by , 85-8 ...
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