The Exploration of SpaceTemple Press, 1951 - 198 pagini |
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Pagina 85
... involved they would , if they were ignored , cause a spaceship to be " above " or " below " the planets , at the end of its voyage , by as much as 5,000,000 miles . To correct for this it would be advisable to make a small change of ...
... involved they would , if they were ignored , cause a spaceship to be " above " or " below " the planets , at the end of its voyage , by as much as 5,000,000 miles . To correct for this it would be advisable to make a small change of ...
Pagina 133
... involved in calculating their orbits was too great . With the modern development of electronic computers , this difficulty has been overcome and almanacs for minor planets can be calculated and printed quite automatically . With this ...
... involved in calculating their orbits was too great . With the modern development of electronic computers , this difficulty has been overcome and almanacs for minor planets can be calculated and printed quite automatically . With this ...
Pagina 192
... involved . It has already been pointed out that ours must be one of the youngest cultures in the Universe . An analogy due to Sir James Jeans may help to emphasise this point . Take a penny , lay a postage stamp on it , and put both on ...
... involved . It has already been pointed out that ours must be one of the youngest cultures in the Universe . An analogy due to Sir James Jeans may help to emphasise this point . Take a penny , lay a postage stamp on it , and put both on ...
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