The Exploration of SpaceTemple Press, 1951 - 198 pagini |
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Pagina 39
... whole project becomes , if not impossible , certainly fantastic . We will see later how this difficulty may be avoided : for the moment let us explore the possibilities of purely automatic rockets — which might be called ...
... whole project becomes , if not impossible , certainly fantastic . We will see later how this difficulty may be avoided : for the moment let us explore the possibilities of purely automatic rockets — which might be called ...
Pagina 156
... whole Earth would be provided by three stations , revolving in the same orbit but spaced 120 degrees apart . ( Figure 18. ) The obvious orbit for this purpose would be the 24 - hour one , 22,000 miles above the Equator . Any point on ...
... whole Earth would be provided by three stations , revolving in the same orbit but spaced 120 degrees apart . ( Figure 18. ) The obvious orbit for this purpose would be the 24 - hour one , 22,000 miles above the Equator . Any point on ...
Pagina 195
... whole story of Mankind before the twentieth century seems like the prelude to some great drama , played on the narrow strip of stage before the curtain has risen and revealed the scenery . For countless generations of men , that tiny ...
... whole story of Mankind before the twentieth century seems like the prelude to some great drama , played on the narrow strip of stage before the curtain has risen and revealed the scenery . For countless generations of men , that tiny ...
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