The Exploration of SpaceHarper, 1951 - 199 pagini |
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Pagina 88
... radar during the ap- proach to a planet , and it will doubtless play an important rôle in probing the dense atmospheres of Venus and the giant planets when we send ships to survey them . The suggestion has often been made that ...
... radar during the ap- proach to a planet , and it will doubtless play an important rôle in probing the dense atmospheres of Venus and the giant planets when we send ships to survey them . The suggestion has often been made that ...
Pagina 124
... radar sets when their beams hap- pened to sweep in the right direction . One can imagine the excitement of the Venusian scientists at the discovery of this strange source of radiation so close at hand . That it was relatively close they ...
... radar sets when their beams hap- pened to sweep in the right direction . One can imagine the excitement of the Venusian scientists at the discovery of this strange source of radiation so close at hand . That it was relatively close they ...
Pagina 188
... radar - absorbing paint . , It is one of the tragic ironies of our age that the rocket , which could have been the symbol of humanity's aspirations for the stars , has become one of the weapons threatening to destroy civilisation . This ...
... radar - absorbing paint . , It is one of the tragic ironies of our age that the rocket , which could have been the symbol of humanity's aspirations for the stars , has become one of the weapons threatening to destroy civilisation . This ...
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