The Exploration of SpaceTemple Press, 1951 - 198 pagini |
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Pagina 4
... 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 138
... discovery of little Nereid in 1949 may expedite the formal christening of its big brother . Until 1930 , Neptune's orbit marked the frontier of the Solar System . In that year Pluto was discovered as a result of a long search by the ...
... discovery of little Nereid in 1949 may expedite the formal christening of its big brother . Until 1930 , Neptune's orbit marked the frontier of the Solar System . In that year Pluto was discovered as a result of a long search by the ...
Pagina 193
... discovered coming from Sun and stars , to the cosmic rays whose origin is still one of the prime mysteries of modern physics . These things we have discovered within the last generation , and we cannot guess what still lies beneath the ...
... discovered coming from Sun and stars , to the cosmic rays whose origin is still one of the prime mysteries of modern physics . These things we have discovered within the last generation , and we cannot guess what still lies beneath the ...
Cuprins
THE SHAPING OF THE DREAM | 1 |
THE EARTH AND ITS NEIGHBOURS | 9 |
THE ROCKET | 17 |
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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