[PDF] Robotic Exploration Of The Solar System Part 4 The Modern Era 2004 2013 Springer Praxis Books Ebook
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Moon - Wikipedia The Moon formed 4.51 billion years ago, some 60 million years after the origin of the Solar System. Several forming mechanisms have been proposed, including the fission of the Moon from Earth's crust through centrifugal force (which would require too great an initial spin of Earth), the gravitational capture of a pre-formed Moon (which would require an unfeasibly extended atmosphere of Earth ... Sonde spatiale Wikipdia Orbiteur. Un orbiteur est une sonde spatiale qui, aprs avoir transit jusqu' son objectif, se met en orbite autour du corps cleste tudier. Il s'agit de la deuxime grand catgorie des sondes spatiales avec celles effectuant un survol. Pour pouvoir se mettre en orbite, la sonde spatiale doit rduire fortement sa vitesse son arrive proximit de son objectif. Space colonization - Wikipedia Space colonization (also called space settlement, or extraterrestrial colonization) is permanent human habitation off the planet Earth.. Many arguments have been made for and against space colonization. The two most common in favor of colonization are survival of human civilization and the biosphere in the event of a planetary-scale disaster (natural or man-made), and the availability of ...
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