The Exploration of SpaceTemple Press, 1951 - 198 pagini |
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Pagina 85
... least in the present state of our knowledge ) -but without radio it would also be severely handicapped . There would be no way of controlling our first unmanned missiles or of recovering information from them , and we would not be able ...
... least in the present state of our knowledge ) -but without radio it would also be severely handicapped . There would be no way of controlling our first unmanned missiles or of recovering information from them , and we would not be able ...
Pagina 123
... least ten and 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 ...
... least ten and 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 ...
Pagina 133
... least one goes nearer the Sun than Mercury . But the majority stay in the zone between Mars and Jupiter . The total number of asteroids , of all sizes , must run into at least five figures . Until recently , astronomers were unable to ...
... least one goes nearer the Sun than Mercury . But the majority stay in the zone between Mars and Jupiter . The total number of asteroids , of all sizes , must run into at least five figures . Until recently , astronomers were unable to ...
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