How long will it take to transform Venus into the earth?

The first proposal to transform Venus was put forward by carl sagan in 196 1 year. In his paper, he proposed a method to convert carbon dioxide in Venus' atmosphere into organic molecules by using transgenic bacteria. However, it was later found that there was sulfuric acid in the clouds of Venus, which, combined with the solar wind effect, made this scheme infeasible.

199 1 year, British scientist Paul Burt proposed in his article "The Rapid Transformation of Venus" that the atmosphere of Venus could be detonated by hydrogen. The chemical reaction caused by the explosion will generate graphite and water, which will fall to the surface of the planet and form an ocean covering about 80% of the surface of the planet. If oxygen resources are not considered, this is undoubtedly a good plan, but this plan needs too much hydrogen, which is not enough for everyone on earth.

In addition, this plan will also spray iron aerosol particles into the atmosphere of Venus. After the chemical reaction, the remaining atmosphere is estimated to be 3 atmospheres (3 times that of the earth), and the main component is nitrogen. After that, part of it will dissolve into the new ocean, which will further reduce the atmospheric pressure and make it gradually close to the earth. Another possible solution is to remove part of Venus' atmosphere to make it consistent with the pressure of the earth.

Because Venus absorbs twice as much light as the earth, plus the greenhouse effect above, the temperature on Venus is very high. How can I get down? Some people have discussed the concept of shading, that is, using a group of small spacecraft to block the sunlight shining on the surface of the planet, or directly reflecting the sunlight back into space with a giant mirror to achieve the effect of comprehensively reducing the surface temperature, but how much shading is needed? What is it made of? How to install it? They are all big problems.

Jeffrey A. Landis, a NASA scientist, also put forward the idea of building houses on the clouds of Venus, because these houses can in turn serve as sunshades and treatment stations, and at the same time provide the earliest accommodation for Venus immigrants.

To say that Venus is the most different from the earth, it should be said that the rotation speed is too slow. Venus rotates once every 243 days, which is the longest rotation period in planets of the solar system. Therefore, the days and nights on Venus are extremely long, and most of the known plants and animals on earth can't adapt to this extreme condition. Not only that, too slow rotation may also lead to too low magnetic field strength of Venus.

How to solve this problem? It has been suggested that an orbital sunglasses system should be set between Venus and the sun, which, combined with the solar reflector in polar orbit, can form a 24-hour illumination period on the surface of Venus.

But more directly, we can speed up the rotation of Venus and make it as long as day and night on the earth. The simplest way is to hit the surface of Venus with other celestial bodies or fly over Venus with a diameter greater than 96.5 kilometers at close range, which can accelerate the rotation of Venus. In addition, it has also been proposed to use a mass accelerator or a dynamic compression device to generate the force needed to accelerate Venus' rotation, and finally make its day-night conversion period the same as that of the Earth.