The Exploration of SpaceTemple Press, 1951 - 198 pagini |
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Pagina 2
... discovered that its pull was much weaker , so that one could jump to great heights . This idea is now quite familiar to us , but Godwin was writing fifty years before Newton discovered the law of gravitation . The idea of lunar voyages ...
... discovered that its pull was much weaker , so that one could jump to great heights . This idea is now quite familiar to us , but Godwin was writing fifty years before Newton discovered the law of gravitation . The idea of lunar voyages ...
Pagina 111
... discovered . Nevertheless , it is possible to foresee certain lines of development which appear likely as soon as we ... discovery , it is that , in the long run - and often in the short one - the most daring prophecies seem laughably ...
... discovered . Nevertheless , it is possible to foresee certain lines of development which appear likely as soon as we ... discovery , it is that , in the long run - and often in the short one - the most daring prophecies seem laughably ...
Pagina 166
... discovering . This is a problem which may be solved when we can build observatories in space . In one or two exceptional cases there is some evidence for bodies of planetary size revolving around other stars . The first to be discovered ...
... discovering . This is a problem which may be solved when we can build observatories in space . In one or two exceptional cases there is some evidence for bodies of planetary size revolving around other stars . The first to be discovered ...
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