The Exploration of SpaceHarper, 1951 - 199 pagini |
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Pagina 12
... might be thought that , because the atmosphere is so relatively shallow , it could be ignored as far as interplanetary flight is con- Plate I HIGH - ALTITUDE MAN- CARRYING ROCKET Drawing by 14 THE EXPLORATION OF SPACE.
... might be thought that , because the atmosphere is so relatively shallow , it could be ignored as far as interplanetary flight is con- Plate I HIGH - ALTITUDE MAN- CARRYING ROCKET Drawing by 14 THE EXPLORATION OF SPACE.
Pagina 97
... relatively mild affairs , and there appear to be no planets in the Solar System having gravities greater than that of our own world and possessing stable surfaces on which we should ever wish - or be able - to land . So much for the ...
... relatively mild affairs , and there appear to be no planets in the Solar System having gravities greater than that of our own world and possessing stable surfaces on which we should ever wish - or be able - to land . So much for the ...
Pagina 119
... relatively small solid bodies like the Earth , Mercury , Mars , Venus and Pluto . These range in size from eight thousand miles in diameter downwards , and all have a density several times that of water . They can properly be called ...
... relatively small solid bodies like the Earth , Mercury , Mars , Venus and Pluto . These range in size from eight thousand miles in diameter downwards , and all have a density several times that of water . They can properly be called ...
Cuprins
The Shaping of the Dream | 1 |
The Earth and Its Neighbours | 7 |
The Rocket | 17 |
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acceleration already asteroids astronautics astronomers atmosphere body bricks 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 ionosphere journey Jupiter landing light light-years lunar Mare Imbrium 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 tion trolley Uranus voyage weight