The Exploration of SpaceTemple Press, 1951 - 198 pagini |
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Pagina 23
... possible for the trolley to carry so much propellant that it could finally travel twice as fast as the speed with which the bricks are thrown off ? This idea may at first seem a little startling , but it must be remembered that as long ...
... possible for the trolley to carry so much propellant that it could finally travel twice as fast as the speed with which the bricks are thrown off ? This idea may at first seem a little startling , but it must be remembered that as long ...
Pagina 116
... possible to generate electrical power on a large scale from nuclear sources . The power unit of an atomic rocket would provide ample energy to run turbines and generators . There is a good deal to be said for moving the lunar base ...
... possible to generate electrical power on a large scale from nuclear sources . The power unit of an atomic rocket would provide ample energy to run turbines and generators . There is a good deal to be said for moving the lunar base ...
Pagina 153
... possible , for the first time , to build instru- ments which could measure the diameters of normal - sized stars . It might even become possible to detect planets of the nearer stars , something quite out of the question with earth ...
... possible , for the first time , to build instru- ments which could measure the diameters of normal - sized stars . It might even become possible to detect planets of the nearer stars , something quite out of the question with earth ...
Cuprins
FRONTISPIECE Automatic Rocket Surveying Mars PLATE I HighAltitude ManCarrying Rocket | 3 |
Spaceships Refuelling In Free Orbit | 4 |
The Earth and its Neighbours | 9 |
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Termeni și expresii frecvente
acceleration already asteroids astronautics astronomers atmosphere body bricks build carry certainly Chapter chemical climb completely course crew degrees F difficult direction distance Earth energy enormous escape velocity exploration extremely fact Figure flywheel free orbit fuel Galaxy giant gravitational field gravity heat Hermann Oberth hundred miles imagine important interplanetary flight interplanetary travel interstellar involved ionosphere journey Jupiter landing light light-years lunar 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 Propontis 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 trolley Uranus voyage weight