The Exploration of SpaceHarper, 1951 - 199 pagini |
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Pagina 75
... certainly seem dangerous - not to mention hard on the nerves of the crew ! -to wait until the Moon was so close before doing any braking . Yet it would be quite safe , especially if there were even a small reserve of power for in ...
... certainly seem dangerous - not to mention hard on the nerves of the crew ! -to wait until the Moon was so close before doing any braking . Yet it would be quite safe , especially if there were even a small reserve of power for in ...
Pagina 113
... certainly not enough to carry sounds - the explorers would have to keep in touch with each other , and with the ship , by radio . This of course presents no difficulty , but range would be rather short and the service some- what erratic ...
... certainly not enough to carry sounds - the explorers would have to keep in touch with each other , and with the ship , by radio . This of course presents no difficulty , but range would be rather short and the service some- what erratic ...
Pagina 149
... certainly take place sooner than the long - term projects we discussed in the last chapter . Indeed , many believe that the building of the space - station may be the first task of astronautics , antedating even the journey to the Moon ...
... certainly take place sooner than the long - term projects we discussed in the last chapter . Indeed , many believe that the building of the space - station may be the first task of astronautics , antedating even the journey to the Moon ...
Cuprins
The Shaping of the Dream | 1 |
The Earth and Its Neighbours | 7 |
The Rocket | 17 |
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acceleration already asteroids astronautics astronomers atmosphere body bricks build carry certainly Chapter chemical completely course crew degrees F difficult direction distance Earth energy enormous escape velocity exploration extremely fact Figure free orbit fuel Galaxy giant gravitational field gravity heat Hermann Oberth hundred miles idea imagine important interplanetary flight interplanetary travel interstellar ionosphere journey Jupiter landing light light-years lunar Mare Imbrium Mars and Venus Martian means Mercury meteors million 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 reason 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 tion trolley Uranus voyage weight