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 48
... possible for the trolley to carry so much propellant that it could finally travel twice as fast as the speed with which the bricks are thrown off ? This idea may at first seem a little startling , but it must be remembered that as long ...
... possible for the trolley to carry so much propellant that it could finally travel twice as fast as the speed with which the bricks are thrown off ? This idea may at first seem a little startling , but it must be remembered that as long ...
Pagina 149
... possible ( though not the best ) propellant for atomic rockets . Electro- lyzed to provide hydrogen and oxygen , it could drive conventional , chemical rockets . Once it became possible to refuel on the Moon , the whole picture would ...
... possible ( though not the best ) propellant for atomic rockets . Electro- lyzed to provide hydrogen and oxygen , it could drive conventional , chemical rockets . Once it became possible to refuel on the Moon , the whole picture would ...
Pagina 189
... possible , for the first time , to build instruments which could measure the diameters of normal - sized stars . It might even become possible to detect planets of the nearer stars , something quite out of the question with earth ...
... possible , for the first time , to build instruments which could measure the diameters of normal - sized stars . It might even become possible to detect planets of the nearer stars , something quite out of the question with earth ...
Cuprins
Preface to the 1951 Edition | 11 |
Thirty Years Later | 15 |
The Shaping of the Dream | 21 |
Drept de autor | |
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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