The Exploration of SpacePocket Books, 1979 - 237 pagini Presents a nonscientific explanation of space exploration and a view of future life on other planets. |
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Pagina 200
... stars . It is not surprising , therefore , that it was quite late in astro- nomical history before it was proved that the stars were actually other suns , made pinpoints of light purely because ... star . The hottest stars of all shine 200.
... stars . It is not surprising , therefore , that it was quite late in astro- nomical history before it was proved that the stars were actually other suns , made pinpoints of light purely because ... star . The hottest stars of all shine 200.
Pagina 204
... stars would be completely lost . The dwellers of such worlds would have a very limited knowledge of astronomy , for they would be unable to observe the structure of the universe through the screen of stars which hid them from the rest ...
... stars would be completely lost . The dwellers of such worlds would have a very limited knowledge of astronomy , for they would be unable to observe the structure of the universe through the screen of stars which hid them from the rest ...
Pagina 205
... stars ( " variables " ) whose brilliance fluctuates over a more modest range . Some of these stars appear to be pulsating , and they go through their cycle of brightness with clockwork pre- cision . Others show no regularity in their ...
... stars ( " variables " ) whose brilliance fluctuates over a more modest range . Some of these stars appear to be pulsating , and they go through their cycle of brightness with clockwork pre- cision . Others show no regularity in their ...
Cuprins
Preface to the 1951 Edition | 11 |
Thirty Years Later | 15 |
The Shaping of the Dream | 21 |
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Termeni și expresii frecvente
acceleration airless already astronautics astronomers atmo atmosphere body bricks build carry certainly Chapter chemical completely conquest of space consider course crew degrees F difficult direction distance Earth energy enormous escape velocity exist exploration extremely fact Figure fuel Galaxy giant gravitational field gravity heat Hermann Oberth hundred miles idea imagine important interplanetary flight interplanetary travel interstellar ionosphere Jerry Pournelle journey Jupiter landing large number light light-years lunar Mars and Venus Martian means Mercury meteors miles in diameter million minutes missile Moon Moon's motors never normal observed once oxygen payload perhaps planetary planets Pluto possible pounds pressure probably problem produce propellant propulsion Proxima Centauri radar radio reach reason refueling rocket power satellite Saturn scientific ship Solar System space space-flight space-station space-suits space-travel spaceship speed spin stars stations surface take-off telescope temperature thousand thrust tion trolley voyage weight weightless