The Exploration of SpaceHarper, 1951 - 199 pagini |
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Pagina 125
... Mars , we are not confronted with impenetrable clouds : we can see the actual surface of the planet and can make maps of its main features . Moreover , when it is nearest to us Mars turns its illuminated face full towards the Earth ...
... Mars , we are not confronted with impenetrable clouds : we can see the actual surface of the planet and can make maps of its main features . Moreover , when it is nearest to us Mars turns its illuminated face full towards the Earth ...
Pagina 127
... Mars is a world which has , literally , rusted away . The Martian deserts are probably fairly flat , for we should be able to detect any high mountains by the irregularities they would cause on the line between night and day . There is ...
... Mars is a world which has , literally , rusted away . The Martian deserts are probably fairly flat , for we should be able to detect any high mountains by the irregularities they would cause on the line between night and day . There is ...
Pagina 131
... Mars more quickly than Mars revolves on its axis , it rises in the west and sets in the east . Much of the time it must be eclipsed by the shadow of the planet , and as it would be about a quarter the apparent size of our Moon it would ...
... Mars more quickly than Mars revolves on its axis , it rises in the west and sets in the east . Much of the time it must be eclipsed by the shadow of the planet , and as it would be about a quarter the apparent size of our Moon it would ...
Cuprins
The Shaping of the Dream | 1 |
The Earth and Its Neighbours | 7 |
The Rocket | 17 |
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acceleration already asteroids astronautics astronomers atmosphere body bricks 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 ionosphere journey Jupiter landing light light-years lunar Mare Imbrium 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 tion trolley Uranus voyage weight