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 |
THE EARTH AND ITS NEIGHBOURS | 9 |
THE ROCKET | 17 |
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Termeni și expresii frecvente
able acceleration actual already appear astronautics astronomers atmosphere atomic become body build carry certainly Chapter close completely consider considerable course deal developed difficult direction discovered discuss distance Earth effect energy escape exist exploration extremely fact fall field Figure fuel give given gravity greater heat human hundred idea imagine important impossible increase interesting interplanetary involved journey known landing least less light limit live look lunar Mars material matter means miles minutes Moon motors necessary never observed once orbit oxygen perhaps period planets Plate possible practical present pressure probably problem produce purely radio reach reason relatively remain rocket round satellite scientific seems seen ship shown simple Solar space spaceship speed stars stations structure surface telescope temperature thousand Universe velocity Venus weight whole