The Exploration of SpaceHarper, 1951 - 199 pagini |
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Pagina 92
... temperature of space " . These hydrogen atoms are moving at con- siderable speeds - speeds which in a gas under normal conditions would correspond to a temperature of 20,000 degrees F. or more . But because of the extremely low density ...
... temperature of space " . These hydrogen atoms are moving at con- siderable speeds - speeds which in a gas under normal conditions would correspond to a temperature of 20,000 degrees F. or more . But because of the extremely low density ...
Pagina 109
... temperature drops to about 250 degress 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 ...
... temperature drops to about 250 degress 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 ...
Pagina 140
... temperature of -300 degrees F. , might take over . It is true that most chemical reactions proceed very slowly , if at all , at low temperatures . However , fluorine , the most reactive of all elements , could conceivably replace oxygen ...
... temperature of -300 degrees F. , might take over . It is true that most chemical reactions proceed very slowly , if at all , at low temperatures . However , fluorine , the most reactive of all elements , could conceivably replace oxygen ...
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