The Exploration of SpaceTemple Press, 1951 - 198 pagini |
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Pagina 39
... whole project becomes , if not impossible , certainly fantastic . We will see later how this difficulty may be avoided : for the moment let us explore the possibilities of purely automatic rockets - which might be called ...
... whole project becomes , if not impossible , certainly fantastic . We will see later how this difficulty may be avoided : for the moment let us explore the possibilities of purely automatic rockets - which might be called ...
Pagina 171
... whole may be taking clearer shape . We may have discovered that space is infinite , and the galaxies extend onwards for ever — or we may have proved that it is curved and of limited volume , so that although the total number of galaxies ...
... whole may be taking clearer shape . We may have discovered that space is infinite , and the galaxies extend onwards for ever — or we may have proved that it is curved and of limited volume , so that although the total number of galaxies ...
Pagina 195
... whole story of Mankind before the twentieth century seems like the prelude to some great drama , played on the narrow strip of stage before the curtain has risen and revealed the scenery . For countless generations of men , that tiny ...
... whole story of Mankind before the twentieth century seems like the prelude to some great drama , played on the narrow strip of stage before the curtain has risen and revealed the scenery . For countless generations of men , that tiny ...
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