The Exploration of SpaceHarper, 1959 - 200 pagini |
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Pagina 46
... reasons for believing that , in time , we will be able to harness atomic energy for rocket pro- pulsion . This would ... reason why there should not be . " Orbital refuelling , " as it has been christened , is the key to interplanetary ...
... reasons for believing that , in time , we will be able to harness atomic energy for rocket pro- pulsion . This would ... reason why there should not be . " Orbital refuelling , " as it has been christened , is the key to interplanetary ...
Pagina 108
... reason this is often called the " dark side , " but of course it would receive just as much sunlight as the rest of the Moon - nor is there the slightest reason to suppose that it will be very different in any other way . When they ...
... reason this is often called the " dark side , " but of course it would receive just as much sunlight as the rest of the Moon - nor is there the slightest reason to suppose that it will be very different in any other way . When they ...
Pagina 136
... reason it has never been officially named and the " Nautical Almanac , " the arbiter in such matters , always refers to it long - windedly as " the satellite of Neptune . " Perhaps the dis- covery of little Nereid in 1949 may expedite ...
... reason it has never been officially named and the " Nautical Almanac , " the arbiter in such matters , always refers to it long - windedly as " the satellite of Neptune . " Perhaps the dis- covery of little Nereid in 1949 may expedite ...
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