The Exploration of SpaceTemple Press, 1951 - 198 pagini |
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Pagina 117
... probably operated electrically . If one wished to project anything away from the Moon , it would be much more economical to do this by means of a fixed , ground installation ( which could also have no restrictions on weight ) than by ...
... probably operated electrically . If one wished to project anything away from the Moon , it would be much more economical to do this by means of a fixed , ground installation ( which could also have no restrictions on weight ) than by ...
Pagina 123
... probably more like twenty times as long as ours . It will be seen , from the above facts , that there is no foundation at all for the rather common idea that Venus is a world of oceans and steaming swamps , like our own planet some ...
... probably more like twenty times as long as ours . It will be seen , from the above facts , that there is no foundation at all for the rather common idea that Venus is a world of oceans and steaming swamps , like our own planet some ...
Pagina 139
... probably consists of nothing more than a cluster of meteors . Planets - satellites - asteroids - comets - this completes our survey of the Solar System . In Chapter 16 we will discuss the probable existence of other planetary systems ...
... probably consists of nothing more than a cluster of meteors . Planets - satellites - asteroids - comets - this completes our survey of the Solar System . In Chapter 16 we will discuss the probable existence of other planetary systems ...
Cuprins
THE SHAPING OF THE DREAM | 1 |
Automatic Rocket Surveying Mars | 4 |
THE EARTH AND ITS NEIGHBOURS | 9 |
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acceleration already astronautics astronomers atmosphere atomic rockets body bricks British Astronomical Association 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 gravitational field gravity heat Hermann Oberth hundred miles idea imagine important interplanetary flight interplanetary travel interstellar ionosphere journey Jupiter landing light light-years lunar Mars and Venus Martian means Mercury meteors 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 trolley Uranus voyage weight