The Exploration of SpaceHarper, 1951 - 199 pagini |
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Pagina 35
... never cross the Atlantic- the coal consumption would be far too great . A century later , the birth of flight was ... never carry the weight of a passenger as well as a pilot ! ) The lesson of this is that it is never safe to make what ...
... never cross the Atlantic- the coal consumption would be far too great . A century later , the birth of flight was ... never carry the weight of a passenger as well as a pilot ! ) The lesson of this is that it is never safe to make what ...
Pagina 58
... never lands on any planet . Its function is to travel from an orbit round the Earth to an orbit round the Moon , Mars , or any other world , carrying personnel , fuel and stores . At its destination it would be met by a Type A or B ship ...
... never lands on any planet . Its function is to travel from an orbit round the Earth to an orbit round the Moon , Mars , or any other world , carrying personnel , fuel and stores . At its destination it would be met by a Type A or B ship ...
Pagina 194
... never have an end . Somewhere on that journey we may at last learn what purpose , if any , life plays in the Universe of matter : certainly we can never learn it on this Earth alone . Among the stars lies the proper study of mankind ...
... never have an end . Somewhere on that journey we may at last learn what purpose , if any , life plays in the Universe of matter : certainly we can never learn it on this Earth alone . Among the stars lies the proper study of mankind ...
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