The Exploration of SpaceTemple Press, 1951 - 198 pagini |
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Pagina 47
... able to increase rocket performances very greatly by the use of chemical fuels , there are reasons for believing that , in time , we will be able to harness atomic energy for rocket propulsion . This would certainly solve our ...
... able to increase rocket performances very greatly by the use of chemical fuels , there are reasons for believing that , in time , we will be able to harness atomic energy for rocket propulsion . This would certainly solve our ...
Pagina 141
... able to exist on very cold worlds , they could hardly have originated there . The indigenous life would probably be based on low- temperature reactions and would not be much hotter than the surroundings . Yet from this type of organism ...
... able to exist on very cold worlds , they could hardly have originated there . The indigenous life would probably be based on low- temperature reactions and would not be much hotter than the surroundings . Yet from this type of organism ...
Pagina 154
... able to observe it from both sides . Since a space - station a few thousand miles up would be able to survey the greater part of the planet in a couple of hours , watching all cloudformations and the movement of storm centres , it could ...
... able to observe it from both sides . Since a space - station a few thousand miles up would be able to survey the greater part of the planet in a couple of hours , watching all cloudformations and the movement of storm centres , it could ...
Cuprins
Automatic Rocket Surveying Mars | 3 |
The Earth and its Neighbours | 9 |
The Rocket | 17 |
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acceleration already astronautics astronomers atmosphere 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 free orbit fuel Galaxy giant gravitational field gravity heat Hermann Oberth hundred miles idea imagine important interplanetary flight interplanetary travel interstellar involved ionosphere journey Jupiter landing light light-years lunar 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 trolley Uranus voyage weight