The Exploration of SpaceTemple Press, 1951 - 198 pagini |
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Pagina 46
... round the Sun , taking four years in the process , before it came near Earth again ! Missing an appointment may or may not be a serious matter in everyday life , but in interplanetary travel it would , almost inevitably , be fatal . We ...
... round the Sun , taking four years in the process , before it came near Earth again ! Missing an appointment may or may not be a serious matter in everyday life , but in interplanetary travel it would , almost inevitably , be fatal . We ...
Pagina 54
... round trips , the refuelling would be complete and the spaceship proper could accelerate out of its orbit and set off to the Moon or whatever its destination might be . On its eventual return to Earth , it could either enter a satellite ...
... round trips , the refuelling would be complete and the spaceship proper could accelerate out of its orbit and set off to the Moon or whatever its destination might be . On its eventual return to Earth , it could either enter a satellite ...
Pagina 131
... round Mars more quickly than Mars revolves on its axis , it rises in the west and sets in the east . Much of the time it must be eclipsed by the shadow of the planet , and as it would be about a quarter the apparent size of our Moon it ...
... round Mars more quickly than Mars revolves on its axis , it rises in the west and sets in the east . Much of the time it must be eclipsed by the shadow of the planet , and as it would be about a quarter the apparent size of our Moon it ...
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