The Exploration of SpaceTemple Press, 1951 - 198 pagini |
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Pagina 12
... Chapter 4. Mercury is moving in its orbit at 107,000 m.p.h. , the Earth at a more modest 68,000 and Pluto at a mere 10,000 m.p.h. The second important point is that almost all the planets lie in or very near the same plane , so that the ...
... Chapter 4. Mercury is moving in its orbit at 107,000 m.p.h. , the Earth at a more modest 68,000 and Pluto at a mere 10,000 m.p.h. The second important point is that almost all the planets lie in or very near the same plane , so that the ...
Pagina 51
... Chapter 15 , the minimum height might be five hundred or even a thousand miles . ) The lower steps of the rocket , discarded during its climb out of the atmosphere , would fall back to earth along a line extending eastwards from the ...
... Chapter 15 , the minimum height might be five hundred or even a thousand miles . ) The lower steps of the rocket , discarded during its climb out of the atmosphere , would fall back to earth along a line extending eastwards from the ...
Pagina 142
... Chapter 18. In what follows now we will assume , perhaps optimistically , that one day the human race will be prepared to devote to astronautics the effort and money needed to wage a minor war . The exploration and colonisation of the ...
... Chapter 18. In what follows now we will assume , perhaps optimistically , that one day the human race will be prepared to devote to astronautics the effort and money needed to wage a minor war . The exploration and colonisation of the ...
Cuprins
THE SHAPING OF THE DREAM | 1 |
Automatic Rocket Surveying Mars | 4 |
THE EARTH AND ITS NEIGHBOURS | 9 |
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acceleration already astronautics astronomers atmosphere atomic rockets body bricks British Astronomical Association 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 gravitational field gravity heat Hermann Oberth hundred miles idea imagine important interplanetary flight interplanetary travel interstellar ionosphere journey Jupiter landing light light-years lunar Mars and Venus Martian means Mercury meteors 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 trolley Uranus voyage weight