The Exploration of SpaceTemple Press, 1951 - 198 pagini |
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Pagina 35
... impossible . Before proceeding any further , however , it is a good idea to recall how many other things have been proved impossible in the past . One hundred and fifty years ago , distinguished mathematicians demonstrated that the new ...
... impossible . Before proceeding any further , however , it is a good idea to recall how many other things have been proved impossible in the past . One hundred and fifty years ago , distinguished mathematicians demonstrated that the new ...
Pagina 88
... impossible ) nobody on one planet will ever be able to converse , in the usual sense of the word , with anybody on another . One could listen to the voice of a friend on Mars , but the words that reached Earth would always have been ...
... impossible ) nobody on one planet will ever be able to converse , in the usual sense of the word , with anybody on another . One could listen to the voice of a friend on Mars , but the words that reached Earth would always have been ...
Pagina 118
... impossible that , provided suitable soil can be found or manufactured , plants could be developed- perhaps from the native lunar vegetation , if this indeed exists- which would flourish unprotected on the Moon's surface . Until we know ...
... impossible that , provided suitable soil can be found or manufactured , plants could be developed- perhaps from the native lunar vegetation , if this indeed exists- which would flourish unprotected on the Moon's surface . Until we know ...
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