The Exploration of SpaceTemple Press, 1951 - 198 pagini |
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Pagina 97
... facts are obvious at once . In many respects our bodies show an almost complete indifference to the direction of ... fact that the heart then has only a fraction of its normal work to do in lifting the weight of blood does not cause ...
... facts are obvious at once . In many respects our bodies show an almost complete indifference to the direction of ... fact that the heart then has only a fraction of its normal work to do in lifting the weight of blood does not cause ...
Pagina 125
... facts . Because of its distance , an observer of Mars , using a large telescope under conditions of good seeing , is in ... fact soon shows less : it is like looking at the reproduction of a photograph in a newspaper through a magnifying ...
... facts . Because of its distance , an observer of Mars , using a large telescope under conditions of good seeing , is in ... fact soon shows less : it is like looking at the reproduction of a photograph in a newspaper through a magnifying ...
Pagina 128
... fact that it contains virtually no oxygen at all rules out any forms of animal life resembling those on Earth . It is probable that the bulk of the atmosphere consists of inert gases such as nitrogen or argon . Although the pressure is ...
... fact that it contains virtually no oxygen at all rules out any forms of animal life resembling those on Earth . It is probable that the bulk of the atmosphere consists of inert gases such as nitrogen or argon . Although the pressure is ...
Cuprins
Automatic Rocket Surveying Mars | 3 |
The Earth and its Neighbours | 9 |
The Rocket | 17 |
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acceleration already astronautics astronomers atmosphere 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 giant gravitational field gravity heat Hermann Oberth hundred miles idea 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 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