The Exploration of SpaceTemple Press, 1951 - 198 pagini |
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Pagina 7
... difficult to show that a substance like Wells ' " Cavo- rite " is a physical impossibility , defying fundamental laws of nature . But the idea of anti - gravity is not in itself absurd , and we shall return to it in Chapter 17 . Wells ...
... difficult to show that a substance like Wells ' " Cavo- rite " is a physical impossibility , defying fundamental laws of nature . But the idea of anti - gravity is not in itself absurd , and we shall return to it in Chapter 17 . Wells ...
Pagina 147
... difficulty in providing all the heat needed to keep an encampment warm even on Pluto . Heat is the one commodity which atomic power can already supply in unlimited amounts . It would be when one attempted to explore these planets ...
... difficulty in providing all the heat needed to keep an encampment warm even on Pluto . Heat is the one commodity which atomic power can already supply in unlimited amounts . It would be when one attempted to explore these planets ...
Pagina 184
... difficult , dangerous and expensive task . The difficulties must not , however , be exag- gerated , for the steadily ... difficulty and magnitude were so great that very few people would have considered them possible . The important ...
... difficult , dangerous and expensive task . The difficulties must not , however , be exag- gerated , for the steadily ... difficulty and magnitude were so great that very few people would have considered them possible . The important ...
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