The Exploration of SpaceTemple Press, 1951 - 198 pagini |
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Pagina 15
... distance --and should help to dispel the surprisingly common impression that it simply finishes when one is still quite close to the Earth . purposes it 1 TON Ε ΤΟΝ 41 CWT . MILES 50 000 THE EARTH AND ITS NEIGHBOURS 15.
... distance --and should help to dispel the surprisingly common impression that it simply finishes when one is still quite close to the Earth . purposes it 1 TON Ε ΤΟΝ 41 CWT . MILES 50 000 THE EARTH AND ITS NEIGHBOURS 15.
Pagina 69
... close orbit - there would be no solar radiation at all . This last condition would also apply at night on an airless world such as the Moon . It appears , therefore , that the ship should have some simple but efficient means of ...
... close orbit - there would be no solar radiation at all . This last condition would also apply at night on an airless world such as the Moon . It appears , therefore , that the ship should have some simple but efficient means of ...
Pagina 124
... close at hand . That it was relatively close they would have realised after a few days ' observations , for it would be shifting rapidly against the fixed background of the Milky Way . After several months they would know that the ...
... close at hand . That it was relatively close they would have realised after a few days ' observations , for it would be shifting rapidly against the fixed background of the Milky Way . After several months they would know that the ...
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