The Exploration of SpaceTemple Press, 1951 - 198 pagini |
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Pagina 13
... limit to the height at which con- ventional aircraft can ever operate . That limit is between 10 and 15 miles - or , roughly speaking , where the THE EARTH AND ITS NEIGHBOURS 13.
... limit to the height at which con- ventional aircraft can ever operate . That limit is between 10 and 15 miles - or , roughly speaking , where the THE EARTH AND ITS NEIGHBOURS 13.
Pagina 40
... limit : once that limit has been agreed , a country would appear to have no redress if an inquisitive neighbour started making rocket reconnaissances as long as they were at a legal height ! We will return , in Chapter 15 , to some of ...
... limit : once that limit has been agreed , a country would appear to have no redress if an inquisitive neighbour started making rocket reconnaissances as long as they were at a legal height ! We will return , in Chapter 15 , to some of ...
Pagina 180
... limits set by the laws of Nature ( and we must assume that eventually these limits will be reached , even though we are very far from them today ) it will be possible to send expeditions to the nearer stars and for them to return within ...
... limits set by the laws of Nature ( and we must assume that eventually these limits will be reached , even though we are very far from them today ) it will be possible to send expeditions to the nearer stars and for them to return within ...
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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Termeni și expresii frecvente
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