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 59
... necessary to move in such an orbit near the bottom of the crater ( i.e. near the Earth's surface ( e ) ) is 18,000 m.p.h. , and this is called " circular velocity " Other similar orbits are shown at ( f ) and ( g ) . These are by no ...
... necessary to move in such an orbit near the bottom of the crater ( i.e. near the Earth's surface ( e ) ) is 18,000 m.p.h. , and this is called " circular velocity " Other similar orbits are shown at ( f ) and ( g ) . These are by no ...
Pagina 106
... necessary . At the end of these maneuvers , which would occupy only a few hours , it would be back in a stable , circular orbit waiting to be refueled and serviced , and the crew could be taken down to Earth by one of the winged " ferry ...
... necessary . At the end of these maneuvers , which would occupy only a few hours , it would be back in a stable , circular orbit waiting to be refueled and serviced , and the crew could be taken down to Earth by one of the winged " ferry ...
Pagina 110
... necessary corrections to the course . Although this is a subject of very great complexity - if one goes into it in any detail - some of the answers can be expressed fairly simply . In one respect , a spaceship is at a great advantage ...
... necessary corrections to the course . Although this is a subject of very great complexity - if one goes into it in any detail - some of the answers can be expressed fairly simply . In one respect , a spaceship is at a great advantage ...
Cuprins
Preface to the 1951 Edition | 11 |
Thirty Years Later | 15 |
The Shaping of the Dream | 21 |
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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