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 67
... Mars . The little rocket ( the last step of a far larger machine ) left the Earth 250 days ago and during that time has been coasting freely , like a comet , along the path that leads to Mars with the least expenditure of fuel . It has ...
... Mars . The little rocket ( the last step of a far larger machine ) left the Earth 250 days ago and during that time has been coasting freely , like a comet , along the path that leads to Mars with the least expenditure of fuel . It has ...
Pagina 162
... Mars . Despite the tenuous nature of the Martian atmo- sphere , it is surprisingly hazy , and normally blocks out the light towards the blue end of the spectrum . The reason for this is unknown : although one is tempted to explain it by ...
... Mars . Despite the tenuous nature of the Martian atmo- sphere , it is surprisingly hazy , and normally blocks out the light towards the blue end of the spectrum . The reason for this is unknown : although one is tempted to explain it by ...
Pagina 165
... Mars . The probability that it has plant life of some kind is very high , though there is no evidence at all for animal life or intelligence . One can imagine these if one postulates the existence of beings who do not require gaseous ...
... Mars . The probability that it has plant life of some kind is very high , though there is no evidence at all for animal life or intelligence . One can imagine these if one postulates the existence of beings who do not require gaseous ...
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