The Exploration of SpaceTemple Press, 1951 - 198 pagini |
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Pagina 35
... impossible . Before proceeding any further , however , it is a good idea to recall how many other things have been proved impossible in the past . One hundred and fifty years ago , distinguished mathematicians demonstrated that the new ...
... impossible . Before proceeding any further , however , it is a good idea to recall how many other things have been proved impossible in the past . One hundred and fifty years ago , distinguished mathematicians demonstrated that the new ...
Pagina 88
... impossible ) nobody on one planet will ever be able to converse , in the usual sense of the word , with anybody on another . One could listen to the voice of a friend on Mars , but the words that reached Earth would always have been ...
... impossible ) nobody on one planet will ever be able to converse , in the usual sense of the word , with anybody on another . One could listen to the voice of a friend on Mars , but the words that reached Earth would always have been ...
Pagina 118
... impossible that , provided suitable soil can be found or manufactured , plants could be developed- perhaps from the native lunar vegetation , if this indeed exists- which would flourish unprotected on the Moon's surface . Until we know ...
... impossible that , provided suitable soil can be found or manufactured , plants could be developed- perhaps from the native lunar vegetation , if this indeed exists- which would flourish unprotected on the Moon's surface . Until we know ...
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