The Exploration of SpaceTemple Press, 1951 - 198 pagini |
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Pagina 23
... example would apply once more and only 344 pounds would be needed to accomplish the same result . This apparently far - fetched analogy has been discussed at some length because it demonstrates very clearly the fundamental laws of ...
... example would apply once more and only 344 pounds would be needed to accomplish the same result . This apparently far - fetched analogy has been discussed at some length because it demonstrates very clearly the fundamental laws of ...
Pagina 36
... example , the single - stage rocket could carry a payload of 400 tons and give it a certain speed , which could not be greatly increased even if we cut the payload down to one ton and made the remaining 399 tons into fuel . The three ...
... example , the single - stage rocket could carry a payload of 400 tons and give it a certain speed , which could not be greatly increased even if we cut the payload down to one ton and made the remaining 399 tons into fuel . The three ...
Pagina 140
... example , on parts of Mercury . Faced with an unpromising environment , life has the choice of two alternatives - adaptation , or insulation . Examples of both can be seen on our world . In the polar regions , the seals and penguins ...
... example , on parts of Mercury . Faced with an unpromising environment , life has the choice of two alternatives - adaptation , or insulation . Examples of both can be seen on our world . In the polar regions , the seals and penguins ...
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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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