The Exploration of SpaceHarper, 1951 - 199 pagini |
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Pagina 64
... purely engineering problem , and it is an exceedingly difficult one . But there is also the question - unavoidable when dealing with atomic energy - of dangerous radiations . The nuclear reactor itself would become " hot " , to use the ...
... purely engineering problem , and it is an exceedingly difficult one . But there is also the question - unavoidable when dealing with atomic energy - of dangerous radiations . The nuclear reactor itself would become " hot " , to use the ...
Pagina 177
... purely as a matter of theoretical interest . He considers a spaceship circumnavigating the Cosmos - assuming that this represents a distance of 10,000 , - 000,000 light years . If the ship could achieve 99.999,999,999 , - 999,999,996 ...
... purely as a matter of theoretical interest . He considers a spaceship circumnavigating the Cosmos - assuming that this represents a distance of 10,000 , - 000,000 light years . If the ship could achieve 99.999,999,999 , - 999,999,996 ...
Pagina 189
... purely astronautical rocket research , with no military entanglements , it it not impos- sible that something like this may evolve in the future . When and if the political situation stabilises , and international co - operation on the ...
... purely astronautical rocket research , with no military entanglements , it it not impos- sible that something like this may evolve in the future . When and if the political situation stabilises , and international co - operation on the ...
Cuprins
The Shaping of the Dream | 1 |
The Earth and Its Neighbours | 7 |
The Rocket | 17 |
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Termeni și expresii frecvente
acceleration already asteroids astronautics astronomers atmosphere body bricks build carry certainly Chapter chemical completely course crew degrees F difficult direction distance Earth energy enormous escape velocity exploration extremely fact Figure free orbit fuel Galaxy giant gravitational field gravity heat Hermann Oberth hundred miles idea imagine important interplanetary flight interplanetary travel interstellar ionosphere journey Jupiter landing light light-years lunar Mare Imbrium Mars and Venus Martian means Mercury meteors million minutes missile Moon Moon's motors never observed oxygen payload perhaps planetary planets Pluto possible pounds pressure pressurised probably problem produce propellant propulsion Proxima Centauri R. A. Smith radar radiation radio reach reason refuelling return to Earth rocket power satellite Saturn scientific ship Solar System space space-flight space-station space-suits space-travel spaceship speed spinning stars stations surface take-off telescope temperature terrestrial thousand thrust tion trolley Uranus voyage weight