The Exploration of SpaceTemple Press, 1951 - 198 pagini |
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Pagina 41
... Moon ( or in more conventional terms , falling in the Moon's gravitational field ) the rocket would gain speed and , at the moment of impact , would be travelling at over 5,000 m.p.h. It will be seen , however , that if it was not aimed ...
... Moon ( or in more conventional terms , falling in the Moon's gravitational field ) the rocket would gain speed and , at the moment of impact , would be travelling at over 5,000 m.p.h. It will be seen , however , that if it was not aimed ...
Pagina 105
... Moon - for all heated bodies do emit radio waves , though at a power level far too low to be detected in ordinary circumstances . From such observations it has been possible to discover facts about the nature of the Moon's surface , and ...
... Moon - for all heated bodies do emit radio waves , though at a power level far too low to be detected in ordinary circumstances . From such observations it has been possible to discover facts about the nature of the Moon's surface , and ...
Pagina 109
... Moon simply by changing one's position slightly , say from a point in direct sunlight to one in shadow . So the values quoted above can be regarded only as indicating the ... Moon is that , since it always keeps the same THE MOON 109.
... Moon simply by changing one's position slightly , say from a point in direct sunlight to one in shadow . So the values quoted above can be regarded only as indicating the ... Moon is that , since it always keeps the same THE MOON 109.
Cuprins
THE SHAPING OF THE DREAM | 1 |
Automatic Rocket Surveying Mars | 4 |
THE EARTH AND ITS NEIGHBOURS | 9 |
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acceleration already 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 free orbit fuel Galaxy gravitational field gravity heat Hermann Oberth hundred miles idea 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 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