The Exploration of SpaceTemple Press, 1951 - 198 pagini |
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Pagina 46
... round the Sun , taking four years in the process , before it came near Earth again ! Missing an appointment may or may not be a serious matter in everyday life , but in interplanetary travel it would , almost inevitably , be fatal . We ...
... round the Sun , taking four years in the process , before it came near Earth again ! Missing an appointment may or may not be a serious matter in everyday life , but in interplanetary travel it would , almost inevitably , be fatal . We ...
Pagina 61
... round the Earth , and will travel to the Moon and planets . ( 2 ) Manned , single - step rockets will ascend to heights of several hundred miles , landing by wings or parachutes . ( 3 ) Multistage , manned rockets will enter circular ...
... round the Earth , and will travel to the Moon and planets . ( 2 ) Manned , single - step rockets will ascend to heights of several hundred miles , landing by wings or parachutes . ( 3 ) Multistage , manned rockets will enter circular ...
Pagina 137
... round trip would last at least six years . For the planets beyond Jupiter , the times would be still longer . However , if refuelling were possible much more direct routes at far higher speeds would become practicable . Saturn's most ...
... round trip would last at least six years . For the planets beyond Jupiter , the times would be still longer . However , if refuelling were possible much more direct routes at far higher speeds would become practicable . Saturn's most ...
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