The Exploration of SpacePresents a nonscientific explanation of space exploration and a view of future life on other planets. |
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Pagina 74
Although we may never be able to increase rocket performances very greatly by the use of chemical fuels , there are reasons for believing that , in time , we will be able to harness atomic energy for rocket propulsion .
Although we may never be able to increase rocket performances very greatly by the use of chemical fuels , there are reasons for believing that , in time , we will be able to harness atomic energy for rocket propulsion .
Pagina 142
For some reason this is often called the " dark side , ” but of course it would receive just as much sunlight as the rest of the Moon — nor is there the slightest reason to suppose that it will be very different in any other way .
For some reason this is often called the " dark side , ” but of course it would receive just as much sunlight as the rest of the Moon — nor is there the slightest reason to suppose that it will be very different in any other way .
Pagina 172
Triton is one of the largest known satellites , being about 3,000 miles in diameter , but for some reason it has never been officially named and the " Nautical Almanac , ” the arbiter in such matters , always refers to it long ...
Triton is one of the largest known satellites , being about 3,000 miles in diameter , but for some reason it has never been officially named and the " Nautical Almanac , ” the arbiter in such matters , always refers to it long ...
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Cuprins
Preface to the 1951 Edition | 11 |
Thirty Years Later | 15 |
The Shaping of the Dream | 21 |
Drept de autor | |
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Termeni și expresii frecvente
able acceleration achieved actual already appear astronautics atmosphere become body build carry certainly Chapter close completely consider considerable course deal developed difficult direction discuss distance Earth effect energy equal escape exist exploration extremely fact fall field Figure fuel give gravity greater heat human hundred idea imagine important impossible increase interesting interplanetary involved journey known landing later least less light limit live look lunar Mars material matter means miles million minutes Moon moving necessary never normal observed once orbit oxygen perhaps period planets possible practical present pressure probably problem produce purely radio range reach reason remain rocket round satellite scientific seems seen ship simple Solar space spaceship speed stars surface telescope temperature thousand tion velocity Venus weight
Referințe la această carte
The MIR Space Station: A Precursor to Space Colonization David M. Harland Vizualizare fragmente - 1997 |
Space Travel: A History Wernher Von Braun,Frederick Ira Ordway (III),Fred Durant,David Dooling Vizualizare fragmente - 1985 |