The Exploration of SpaceTemple Press, 1951 - 198 pagini |
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Pagina 15
... surface on the way into space and — much more important — it offers a means of making a safe landing on the return . This thin blanket of air , without which life as we know it would be impossible , is held tightly to the Earth by the ...
... surface on the way into space and — much more important — it offers a means of making a safe landing on the return . This thin blanket of air , without which life as we know it would be impossible , is held tightly to the Earth by the ...
Pagina 31
... surface , therefore , as we look up at the planets and wonder how we can reach them , are in rather the same position as people at the bottom of a perfectly smooth pit or funnel 4,000 miles deep , set in the surface of an endless , flat ...
... surface , therefore , as we look up at the planets and wonder how we can reach them , are in rather the same position as people at the bottom of a perfectly smooth pit or funnel 4,000 miles deep , set in the surface of an endless , flat ...
Pagina 76
... surface of the Moon . By the time a landing is attempted we will certainly have large - scale photographs of the lunar plains and will have located numerous relatively flat areas which would provide suitable places for a touch - down ...
... surface of the Moon . By the time a landing is attempted we will certainly have large - scale photographs of the lunar plains and will have located numerous relatively flat areas which would provide suitable places for a touch - down ...
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