The Exploration of SpaceTemple Press, 1951 - 198 pagini |
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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 107
... Moon . Another fairly common lunar formation is the " rill " or " cleft " , of which several examples will be seen in Plate VII.3 Some of these fissures are of great size and would be impressive , if not indeed terrifying , spectacles ...
... Moon . Another fairly common lunar formation is the " rill " or " cleft " , of which several examples will be seen in Plate VII.3 Some of these fissures are of great size and would be impressive , if not indeed terrifying , spectacles ...
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
FRONTISPIECE Automatic Rocket Surveying Mars PLATE I HighAltitude ManCarrying Rocket | 3 |
Spaceships Refuelling In Free Orbit | 4 |
The Earth and its Neighbours | 9 |
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acceleration already asteroids astronautics astronomers atmosphere body bricks build carry certainly Chapter chemical climb 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 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 Propontis 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