The Exploration of SpaceTemple Press, 1951 - 198 pagini |
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Pagina 7
... difficult to show that a substance like Wells ' " Cavo- rite " is a physical impossibility , defying fundamental laws of nature . But the idea of anti - gravity is not in itself absurd , and we shall return to it in Chapter 17 . Wells ...
... difficult to show that a substance like Wells ' " Cavo- rite " is a physical impossibility , defying fundamental laws of nature . But the idea of anti - gravity is not in itself absurd , and we shall return to it in Chapter 17 . Wells ...
Pagina 184
... difficult , dangerous and expensive task . The difficulties must not , however , be exag- gerated , for the steadily ... difficulty and magnitude were so great that very few people would have considered them possible . 2 The important ...
... difficult , dangerous and expensive task . The difficulties must not , however , be exag- gerated , for the steadily ... difficulty and magnitude were so great that very few people would have considered them possible . 2 The important ...
Pagina 188
... difficult to locate , if it were covered with light and radar- absorbing paint . It is one of the tragic ironies of our age that the rocket , which could have been the symbol of humanity's aspirations for the stars , has become one of ...
... difficult to locate , if it were covered with light and radar- absorbing paint . It is one of the tragic ironies of our age that the rocket , which could have been the symbol of humanity's aspirations for the stars , has become one of ...
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