The Exploration of SpaceTemple Press, 1951 - 198 pagini |
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Pagina 117
... probably operated electrically . If one wished to project anything away from the Moon , it would be much more economical to do this by means of a fixed , ground installation ( which could also have no restrictions on weight ) than by ...
... probably operated electrically . If one wished to project anything away from the Moon , it would be much more economical to do this by means of a fixed , ground installation ( which could also have no restrictions on weight ) than by ...
Pagina 123
... probably more like twenty times as long as ours . It will be seen , from the above facts , that there is no foundation at all for the rather common idea that Venus is a world of oceans and steaming swamps , like our own planet some ...
... probably more like twenty times as long as ours . It will be seen , from the above facts , that there is no foundation at all for the rather common idea that Venus is a world of oceans and steaming swamps , like our own planet some ...
Pagina 139
... probably consists of nothing more than a cluster of meteors . Planets - satellites - asteroids - comets - this completes our survey of the Solar System . In Chapter 16 we will discuss the probable existence of other planetary systems ...
... probably consists of nothing more than a cluster of meteors . Planets - satellites - asteroids - comets - this completes our survey of the Solar System . In Chapter 16 we will discuss the probable existence of other planetary systems ...
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