The Exploration of SpaceTemple Press, 1951 - 198 pagini |
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Pagina 5
... live unaided at great altitudes . The Moon and planets had become much less accessible than they had seemed to Bishops Godwin and Wilkins . By the second half of the century , however , the fiction writers had overcome their momentary ...
... live unaided at great altitudes . The Moon and planets had become much less accessible than they had seemed to Bishops Godwin and Wilkins . By the second half of the century , however , the fiction writers had overcome their momentary ...
Pagina 13
... live if the pressure of the surrounding air falls below about one - half of its sea - level value , and most men would be practically incapacitated well before this figure was reached . As we ascend from the Earth's surface , the ...
... live if the pressure of the surrounding air falls below about one - half of its sea - level value , and most men would be practically incapacitated well before this figure was reached . As we ascend from the Earth's surface , the ...
Pagina 160
... live normal lives yet carry out zero - gravity experiments when- ever they wished . Other satellites - particularly those used for astronomical research , where instruments have to be kept rigidly fixed for long periods in an unvarying ...
... live normal lives yet carry out zero - gravity experiments when- ever they wished . Other satellites - particularly those used for astronomical research , where instruments have to be kept rigidly fixed for long periods in an unvarying ...
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