The Exploration of SpaceTemple Press, 1951 - 198 pagini |
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Pagina 15
... practical example of the saying that nothing succeeds like success . ) As far as gravity is concerned , leaving the Earth is rather like climbing a hill which at first is very steep but later becomes more and more gentle until finally ...
... practical example of the saying that nothing succeeds like success . ) As far as gravity is concerned , leaving the Earth is rather like climbing a hill which at first is very steep but later becomes more and more gentle until finally ...
Pagina 88
... practical as the White Knight's scheme for spiked anklets to protect his horse's feet from shark bites . Meteors are so tiny that no radar system could detect them more than a fraction of a second before impact — a warning period which ...
... practical as the White Knight's scheme for spiked anklets to protect his horse's feet from shark bites . Meteors are so tiny that no radar system could detect them more than a fraction of a second before impact — a warning period which ...
Pagina 182
... practical policy on the national or the cosmic scale . And when the first contact with the outer universe is made , one would like to think that Mankind played an active and not merely a passive rôle - that we were the discoverers , not ...
... practical policy on the national or the cosmic scale . And when the first contact with the outer universe is made , one would like to think that Mankind played an active and not merely a passive rôle - that we were the discoverers , not ...
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