The Exploration of SpaceHarper, 1959 - 200 pagini |
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Pagina 6
... fact that it was fitted with rockets for steering once it had reached space . Verne understood perfectly well - as many people at a much later date did not - that the rocket could function in an airless vacuum , but he never thought of ...
... fact that it was fitted with rockets for steering once it had reached space . Verne understood perfectly well - as many people at a much later date did not - that the rocket could function in an airless vacuum , but he never thought of ...
Pagina 126
... fact is that these compounds occur only in the dark " Maria , " as would be the case if they were areas of vegetation . Before we jump to any conclusions regarding life on Mars , we must consider what is known about its atmosphere . The ...
... fact is that these compounds occur only in the dark " Maria , " as would be the case if they were areas of vegetation . Before we jump to any conclusions regarding life on Mars , we must consider what is known about its atmosphere . The ...
Pagina 134
... fact that escape velocity at the planet's surface is 130,000 mph , 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 mph , 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 |
Navigation and Communication in Space | 78 |
1 | 118 |
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acceleration airless asteroids astronautics astronomers atmosphere body bricks build carry certainly Chapter chemical completely course crew diameter difficult distance Earth energy engineering enormous escape velocity exploration extremely fact Figure free orbit fuel Galaxy gases gravitational field gravity heat hundred hydrogen imagine important interplanetary flight interplanetary travel interstellar ionosphere journey Jupiter landing LEWIS CARROLL light light-years lunar Mars and Venus Martian means Mercury meteors miles million minutes missiles Moon Moon's motors never normal observed orbit oxygen payload perhaps planetary Plate Pluto possible pounds pressure probably problem produce propellant propulsion Proxima Centauri R. A. Smith radar radiation radio reach reason refueling rocket power satellite Saturn scientific ship Solar System space space-flight space-stations space-suits space-travel spaceship speed spinning stars stations structure sunlight surface take-off tanks telescope temperature thousand thrust trolley Uranus vehicle voyage weight weightless