The Exploration of SpaceHarper, 1951 - 199 pagini |
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Pagina 97
... facts are obvious at once . In many respects our bodies show an almost complete indifference to the direction of ... fact that the heart then has only a fraction of its normal work to do in lifting the weight of blood does not cause ...
... facts are obvious at once . In many respects our bodies show an almost complete indifference to the direction of ... fact that the heart then has only a fraction of its normal work to do in lifting the weight of blood does not cause ...
Pagina 128
... fact that it contains virtually no oxygen at all rules out any forms of animal life resembling those on Earth . It is probable that the bulk of the atmosphere consists of inert gases such as nitrogen or argon . Although the pressure is ...
... fact that it contains virtually no oxygen at all rules out any forms of animal life resembling those on Earth . It is probable that the bulk of the atmosphere consists of inert gases such as nitrogen or argon . Although the pressure is ...
Pagina 136
... fact that escape velocity at the planet's surface is 130,000 m.p.h. , compared with the Earth's mere 25,000 ! Although nine moons of Saturn have been discovered , there can be little doubt that others still remain undetected . The fact ...
... fact that escape velocity at the planet's surface is 130,000 m.p.h. , compared with the Earth's mere 25,000 ! Although nine moons of Saturn have been discovered , there can be little doubt that others still remain undetected . The fact ...
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