The Exploration of Space |
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Pagina 40
The extent to which any nation can claim the ownership of space in a vertical direction must clearly have some limit : once that limit has been agreed , a country would appear to have no redress if an inquisitive neighbour started ...
The extent to which any nation can claim the ownership of space in a vertical direction must clearly have some limit : once that limit has been agreed , a country would appear to have no redress if an inquisitive neighbour started ...
Pagina 73
The direction along which the axis of a coasting spaceship points ( its “ attitude ” , as it is called ) is completely independent of its direction of motion — which is itself a quite arbitrary quantity , depending entirely on the ...
The direction along which the axis of a coasting spaceship points ( its “ attitude ” , as it is called ) is completely independent of its direction of motion — which is itself a quite arbitrary quantity , depending entirely on the ...
Pagina 83
It might then become necessary to alter the ship's course in speed , direction , or both , to correct for this . We have already pointed out , on page 73 , that the actual orientation or attitude of a spaceship has nothing to do with ...
It might then become necessary to alter the ship's course in speed , direction , or both , to correct for this . We have already pointed out , on page 73 , that the actual orientation or attitude of a spaceship has nothing to do with ...
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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 moving 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 seems seen ship shown simple Solar space spaceship speed stars stations structure surface telescope temperature thousand Universe velocity Venus weight whole