Abstract

The search for life is one of the major domains of space research, but it is also the most disappointing. There remains a small hope of success near the southern tropic of Mars. The installation of large human communities is possible on some planets and satellites. For Venus the major problem is to cool down that very hot planet (460°C); it can be done through the interposition of a dust cloud between the Sun and Venus. An efficient dust cloud must be very heavy (billions of tons) and it can be obtained through the pulverization of a well chosen asteroid at a proper place. Thousands of asteroids cross the Venus orbit; it is possible to move some of them with atom bombs and to lead them to the desired place. When Venus will be cold its gaseous CO 2 will disappear into the rocks, the corresponding “greenhouse effect” will be destroyed and we will thus reach a new stable equilibrium. The most pleasant Venusian regions will certainly be the polar regions without night; the Venusian equator is indeed almost exactly in the orbital plane of the planet.

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