The Exploration of SpaceHarper, 1951 - 199 pagini |
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Pagina 71
... journey to the Moon . The human race is remarkably fortunate in having so near at hand a full - sized world with which to experiment : before we aim at the planets , we will have had a chance of perfecting our astronautical techniques ...
... journey to the Moon . The human race is remarkably fortunate in having so near at hand a full - sized world with which to experiment : before we aim at the planets , we will have had a chance of perfecting our astronautical techniques ...
Pagina 77
... journey down to the Moon and then lift it up again . It remains to be seen , however , whether this idea will prove to be practicable when allowance is made for all the complications it involves , and the restriction it puts on the ...
... journey down to the Moon and then lift it up again . It remains to be seen , however , whether this idea will prove to be practicable when allowance is made for all the complications it involves , and the restriction it puts on the ...
Pagina 116
... journey , be- cause of our satellite's much lower gravity . If large supplies of fuel can ever be obtained on the Moon , it would become the key to the Solar System . Spaceships making any interplanetary journey would , on departure and ...
... journey , be- cause of our satellite's much lower gravity . If large supplies of fuel can ever be obtained on the Moon , it would become the key to the Solar System . Spaceships making any interplanetary journey would , on departure and ...
Cuprins
The Shaping of the Dream | 1 |
The Earth and Its Neighbours | 7 |
The Rocket | 17 |
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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