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 72
... velocity has been correctly given , the far longer period of " free coasting " will follow auto- matically . In this sense , there is an analogy between a space- ship and an artillery shell . Once the shell has been launched in the ...
... velocity has been correctly given , the far longer period of " free coasting " will follow auto- matically . In this sense , there is an analogy between a space- ship and an artillery shell . Once the shell has been launched in the ...
Pagina 113
... velocity . To alter this , the rockets have to be used in the manner shown in Figure 14 . A- ( a ) ( b ) Figure 14. Altering the Velocity of a Spaceship Suppose that the velocity of the ship is represented , in magnitude and direction ...
... velocity . To alter this , the rockets have to be used in the manner shown in Figure 14 . A- ( a ) ( b ) Figure 14. Altering the Velocity of a Spaceship Suppose that the velocity of the ship is represented , in magnitude and direction ...
Pagina 212
... velocity of light , and at that speed the mass of any object would become infinite . This , of course , is merely another way of saying that the velocity of light can be approached as closely as one pleases but can never be actually ...
... velocity of light , and at that speed the mass of any object would become infinite . This , of course , is merely another way of saying that the velocity of light can be approached as closely as one pleases but can never be actually ...
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