The Exploration of SpaceTemple Press, 1951 - 198 pagini |
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Pagina 92
... degrees F. or more . But because of the extremely low density of the " gas " , the actual heat content is completely negligible and its presence would not affect a spaceship in the slightest . A few years ago a journalist , who had read ...
... degrees F. or more . But because of the extremely low density of the " gas " , the actual heat content is completely negligible and its presence would not affect a spaceship in the slightest . A few years ago a journalist , who had read ...
Pagina 109
... degrees below zero Fahrenheit , a total " daily " range of more than 400 degrees ! For comparison , the highest and lowest temperatures ever recorded on Earth are +136 degrees and —94 degrees F. It should be pointed out , moreover ...
... degrees below zero Fahrenheit , a total " daily " range of more than 400 degrees ! For comparison , the highest and lowest temperatures ever recorded on Earth are +136 degrees and —94 degrees F. It should be pointed out , moreover ...
Pagina 140
... degrees F. but above 108 degrees F. , ammonia might take the place of water for many purposes . On even colder worlds methane , which remains liquid down to the extraordinarily low temperature of - 300 degrees F. , might take over . It ...
... degrees F. but above 108 degrees F. , ammonia might take the place of water for many purposes . On even colder worlds methane , which remains liquid down to the extraordinarily low temperature of - 300 degrees F. , might take over . It ...
Cuprins
Automatic Rocket Surveying Mars | 3 |
The Earth and its Neighbours | 9 |
The Rocket | 17 |
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acceleration already astronautics astronomers atmosphere body bricks British Astronomical Association 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 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 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