The Exploration of SpaceHarper, 1959 - 200 pagini |
Din interiorul cărții
Rezultatele 1 - 3 din 52
Pagina 60
... Mars and Venus . Although the power requirements are not much greater than for the lunar voyage , the duration of flight ( 145 days to Venus , 240-250 days to Mars ) would demand the use of considerably larger vessels . Whether any ...
... Mars and Venus . Although the power requirements are not much greater than for the lunar voyage , the duration of flight ( 145 days to Venus , 240-250 days to Mars ) would demand the use of considerably larger vessels . Whether any ...
Pagina 125
... 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 129
... Mars has two tiny satellites , only ten or twenty miles in diameter . Phobos , the closer of the two , is so near the planet that it is in- visible from the polar regions , being hidden by the curvature of the globe . As it moves round Mars ...
... Mars has two tiny satellites , only ten or twenty miles in diameter . Phobos , the closer of the two , is so near the planet that it is in- visible from the polar regions , being hidden by the curvature of the globe . As it moves round Mars ...
Cuprins
The Shaping of the Dream | 1 |
Navigation and Communication in Space | 78 |
1 | 118 |
Drept de autor | |
1 alte secțiuni nu sunt arătate
Alte ediții - Afișează-le pe toate
Termeni și expresii frecvente
acceleration airless asteroids astronautics astronomers atmosphere body bricks build carry certainly Chapter chemical completely course crew diameter difficult distance Earth energy engineering enormous escape velocity exploration extremely fact Figure free orbit fuel Galaxy gases gravitational field gravity heat hundred hydrogen imagine important interplanetary flight interplanetary travel interstellar ionosphere journey Jupiter landing LEWIS CARROLL light light-years lunar Mars and Venus Martian means Mercury meteors miles million minutes missiles Moon Moon's motors never normal observed orbit oxygen payload perhaps planetary Plate Pluto possible pounds pressure probably problem produce propellant propulsion Proxima Centauri R. A. Smith radar radiation radio reach reason refueling rocket power satellite Saturn scientific ship Solar System space space-flight space-stations space-suits space-travel spaceship speed spinning stars stations structure sunlight surface take-off tanks telescope temperature thousand thrust trolley Uranus vehicle voyage weight weightless