The Exploration of SpaceTemple Press, 1951 - 198 pagini |
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Pagina 44
... thousand miles or so of the voyage - than in the jour- ney from orbit to orbit , which may cover a distance ten thousand times as great . Once again it should be emphasised that , to travel from one planet to another , rocket power need ...
... thousand miles or so of the voyage - than in the jour- ney from orbit to orbit , which may cover a distance ten thousand times as great . Once again it should be emphasised that , to travel from one planet to another , rocket power need ...
Pagina 82
... thousand a second . Then if the ship were travelling towards Earth , it would receive more than a thousand pips a second : if away from it , less . Modern electronic equipment can make such measurements with great accuracy and one day ...
... thousand a second . Then if the ship were travelling towards Earth , it would receive more than a thousand pips a second : if away from it , less . Modern electronic equipment can make such measurements with great accuracy and one day ...
Pagina 135
... thousands of them exist , they cannot constitute a " menace to navigation " , as has some- times been suggested . The gulf between Mars and Jupiter is too enormous for a few thousand , or even a few million , asteroids to go very far ...
... thousands of them exist , they cannot constitute a " menace to navigation " , as has some- times been suggested . The gulf between Mars and Jupiter is too enormous for a few thousand , or even a few million , asteroids to go very far ...
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