The Exploration of SpaceTemple Press, 1951 - 198 pagini |
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Pagina 45
... take off " and " land " , if one can extend these phrases to cover such a case , in the directions in which the planets are already moving . The shorter paths would cut across the planetary orbits at an angle , and so it would require ...
... take off " and " land " , if one can extend these phrases to cover such a case , in the directions in which the planets are already moving . The shorter paths would cut across the planetary orbits at an angle , and so it would require ...
Pagina 50
... get a picture of the type of ship we will use for our first trips into space . It will be a two- or three - step rocket , with an initial weight of a few hundred tons . The take - off will be vertical , and it is quite likely that the ...
... get a picture of the type of ship we will use for our first trips into space . It will be a two- or three - step rocket , with an initial weight of a few hundred tons . The take - off will be vertical , and it is quite likely that the ...
Pagina 97
... take - off from Earth . Landings and take - offs for bodies such as Mars and the Moon would be relatively mild affairs , and there appear to be no planets in the Solar System having gravities greater than that of our own world and ...
... take - off from Earth . Landings and take - offs for bodies such as Mars and the Moon would be relatively mild affairs , and there appear to be no planets in the Solar System having gravities greater than that of our own world and ...
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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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