The Exploration of SpaceTemple Press, 1951 - 198 pagini |
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Pagina 85
... least in the present state of our knowledge ) -but without radio it would also be severely handicapped . There would be no way of controlling our first unmanned missiles or of recovering information from them , and we would not be able ...
... least in the present state of our knowledge ) -but without radio it would also be severely handicapped . There would be no way of controlling our first unmanned missiles or of recovering information from them , and we would not be able ...
Pagina 123
... least ten and 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 ...
... least ten and 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 ...
Pagina 133
... least one goes nearer the Sun than Mercury . But the majority stay in the zone between Mars and Jupiter . The total number of asteroids , of all sizes , must run into at least five figures . Until recently , astronomers were unable to ...
... least one goes nearer the Sun than Mercury . But the majority stay in the zone between Mars and Jupiter . The total number of asteroids , of all sizes , must run into at least five figures . Until recently , astronomers were unable to ...
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