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 61
... appears to be at about double the values we can achieve today , and some experts would put it considerably lower . Even taking the optimistic view , therefore , it appears that the maxi- mum speed we can ever expect from single - stage ...
... appears to be at about double the values we can achieve today , and some experts would put it considerably lower . Even taking the optimistic view , therefore , it appears that the maxi- mum speed we can ever expect from single - stage ...
Pagina 120
... appear to reach us from all direc- tions . The only effect of the solar rays would be to warm the ship : they could not penetrate even the smallest thickness of hull . One precaution would be necessary to deal with them , for the ...
... appear to reach us from all direc- tions . The only effect of the solar rays would be to warm the ship : they could not penetrate even the smallest thickness of hull . One precaution would be necessary to deal with them , for the ...
Pagina 212
... appear to be longer . Again the effect is very small at ordinary speeds but becomes enormous as one nears the velocity of light . At this limiting speed , in fact , time would appear to stand still . It will be seen that this relativity ...
... appear to be longer . Again the effect is very small at ordinary speeds but becomes enormous as one nears the velocity of light . At this limiting speed , in fact , time would appear to stand still . It will be seen that this relativity ...
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