The Exploration of SpaceHarper, 1959 - 200 pagini |
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Pagina 67
... extremely cold outside the atmosphere . In fact , the reverse is nearer the truth . Consider the case of a solid body floating in space at the Earth's distance from the Sun. One side will be in shadow , the other in full sunlight . This ...
... extremely cold outside the atmosphere . In fact , the reverse is nearer the truth . Consider the case of a solid body floating in space at the Earth's distance from the Sun. One side will be in shadow , the other in full sunlight . This ...
Pagina 125
... extremely delicate spectroscopic observations have shown the presence of hydrogen - carbon compounds on Mars . This does not in itself prove the existence of organic life , for hydrocarbons are found on the utterly frigid outer planets ...
... extremely delicate spectroscopic observations have shown the presence of hydrogen - carbon compounds on Mars . This does not in itself prove the existence of organic life , for hydrocarbons are found on the utterly frigid outer planets ...
Pagina 136
... extremely difficult and to some extent a matter of luck . That the Sun can control the movement of bodies far out into interstellar space is proved by the existence of comets . Some of these strange entities travel on extremely ...
... extremely difficult and to some extent a matter of luck . That the Sun can control the movement of bodies far out into interstellar space is proved by the existence of comets . Some of these strange entities travel on extremely ...
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