The Exploration of SpaceTemple Press, 1951 - 198 pagini |
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Pagina 5
... live unaided at great altitudes . The Moon and planets had become much less accessible than they had seemed to Bishops Godwin and Wilkins . By the second half of the century , however , the fiction writers had overcome their momentary ...
... live unaided at great altitudes . The Moon and planets had become much less accessible than they had seemed to Bishops Godwin and Wilkins . By the second half of the century , however , the fiction writers had overcome their momentary ...
Pagina 13
... live if the pressure of the surrounding air falls below about one - half of its sea - level value , and most men would be practically incapacitated well before this figure was reached . As we ascend from the Earth's surface , the ...
... live if the pressure of the surrounding air falls below about one - half of its sea - level value , and most men would be practically incapacitated well before this figure was reached . As we ascend from the Earth's surface , the ...
Pagina 160
... live normal lives yet carry out zero - gravity experiments when- ever they wished . Other satellites - particularly those used for astronomical research , where instruments have to be kept rigidly fixed for long periods in an unvarying ...
... live normal lives yet carry out zero - gravity experiments when- ever they wished . Other satellites - particularly those used for astronomical research , where instruments have to be kept rigidly fixed for long periods in an unvarying ...
Cuprins
THE SHAPING OF THE DREAM | 1 |
FRONTISPIECE Automatic Rocket Surveying Mars PLATE I HighAltitude ManCarrying Rocket | 4 |
Spaceships Refuelling In Free Orbit | 4 |
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Termeni și expresii frecvente
acceleration already asteroids astronautics astronomers atmosphere atomic rockets body bricks British Astronomical Association build carry certainly Chapter chemical completely course crew degrees F difficult direction distance Earth energy enormous escape velocity exploration extremely fact Figure flywheel free orbit fuel Galaxy giant gravitational field gravity heat Hermann Oberth hundred miles imagine important interplanetary flight interplanetary travel interstellar ionosphere journey Jupiter landing light light-years lunar Mars and Venus Martian means Mercury meteors 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 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 trolley Uranus voyage weight