The Exploration of SpaceHarper, 1951 - 199 pagini |
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Pagina 80
... interesting of these is the subject of navigation -which includes determination of position and velocity , as well as the actions required to make any necessary corrections to the course . Although this is a subject of very great ...
... interesting of these is the subject of navigation -which includes determination of position and velocity , as well as the actions required to make any necessary corrections to the course . Although this is a subject of very great ...
Pagina 91
... interesting to imagine what would happen in a collision at such velocities - so much greater than any that are ever met on the Earth . One suggestion is that the meteor and the area of the hull at the point of impact would be instantly ...
... interesting to imagine what would happen in a collision at such velocities - so much greater than any that are ever met on the Earth . One suggestion is that the meteor and the area of the hull at the point of impact would be instantly ...
Pagina 127
... interesting areas of Mars are the dark regions , which show seasonal changes linked with the melting of the polar caps . The early observers made the fairly natural assumption that these regions were seas , and christened them " Maria ...
... interesting areas of Mars are the dark regions , which show seasonal changes linked with the melting of the polar caps . The early observers made the fairly natural assumption that these regions were seas , and christened them " Maria ...
Cuprins
The Shaping of the Dream | 1 |
The Earth and Its Neighbours | 7 |
The Rocket | 17 |
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acceleration already asteroids astronautics astronomers atmosphere body bricks build carry certainly Chapter chemical completely course crew degrees F difficult direction distance Earth energy enormous escape velocity exploration extremely fact Figure free orbit fuel Galaxy giant gravitational field gravity heat Hermann Oberth hundred miles idea imagine important interplanetary flight interplanetary travel interstellar ionosphere journey Jupiter landing light light-years lunar Mare Imbrium Mars and Venus Martian means Mercury meteors million minutes missile Moon Moon's motors never observed oxygen payload perhaps planetary planets Pluto possible pounds pressure pressurised probably problem produce propellant propulsion Proxima Centauri R. A. Smith radar radiation radio reach reason refuelling return to Earth rocket power satellite Saturn scientific ship Solar System space space-flight space-station space-suits space-travel spaceship speed spinning stars stations surface take-off telescope temperature terrestrial thousand thrust tion trolley Uranus voyage weight