The Exploration of SpaceTemple Press, 1951 - 198 pagini |
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Pagina 40
... already obtained radio echoes from the Moon - a feat hundreds of times more difficult than sending a one - way signal over the same distance ! ) During the next decade it would certainly be possible to build an orbiting rocket carrying ...
... already obtained radio echoes from the Moon - a feat hundreds of times more difficult than sending a one - way signal over the same distance ! ) During the next decade it would certainly be possible to build an orbiting rocket carrying ...
Pagina 147
... already been solved . Anyone who has ever watched the mechanical hands and arms at work behind the lead barriers in a laboratory dealing with radioactive isotopes will agree that the remotely controlled robot is already almost with us ...
... already been solved . Anyone who has ever watched the mechanical hands and arms at work behind the lead barriers in a laboratory dealing with radioactive isotopes will agree that the remotely controlled robot is already almost with us ...
Pagina 152
... already obvious . The most important may be listed as follows : ( 1 ) astronomical and physical research ; ( 2 ) meteorology and surveying ; ( 3 ) biological studies ; ( 4 ) refuel- ling ; ( 5 ) radio relaying ; and ( 6 ) dock ...
... already obvious . The most important may be listed as follows : ( 1 ) astronomical and physical research ; ( 2 ) meteorology and surveying ; ( 3 ) biological studies ; ( 4 ) refuel- ling ; ( 5 ) radio relaying ; and ( 6 ) dock ...
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