The Exploration of SpaceHarper, 1959 - 200 pagini |
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Pagina 56
... never lands on any planet . Its function is to travel from an orbit round the Earth to an orbit round the Moon , Mars , or any other world , carrying personnel , fuel , and stores . At its desti- nation it would be met by a Type A or B ...
... never lands on any planet . Its function is to travel from an orbit round the Earth to an orbit round the Moon , Mars , or any other world , carrying personnel , fuel , and stores . At its desti- nation it would be met by a Type A or B ...
Pagina 176
... never come to Earth ? One answer to this is given by Plate XIV , the star clouds in Cygnus . The tightly packed star - fields shown there cover only a small portion of the Milky Way , and each of those stars is sep- arated from its ...
... never come to Earth ? One answer to this is given by Plate XIV , the star clouds in Cygnus . The tightly packed star - fields shown there cover only a small portion of the Milky Way , and each of those stars is sep- arated from its ...
Pagina 188
... never escape to reach that outer reality , but one day we may hope to reach other prisoners in adjoining caves , where we may learn far more than we could ever do by our own unaided efforts . Yet space - travel will not , as some fear ...
... never escape to reach that outer reality , but one day we may hope to reach other prisoners in adjoining caves , where we may learn far more than we could ever do by our own unaided efforts . Yet space - travel will not , as some fear ...
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