Venus is the closest to the earth, but the focus of human attention is on Mars. Why do scientists go further and further?

The eight planets in the solar system are Mercury and Venus, and the third planet is our earth. However, Venus, the second planet, can't do it, so we have to consider Old Four. Mars is farther from the moon than the earth, its temperature is lower than the earth, and its uniform rotation and rotation are not far apart compared with the earth, so it is the only temporary research object in the solar system-Mars. Venus is close to the earth, but it is also close to the sun. Scientists already know the surface of Venus: the temperature has been searched for four or five Baidu. According to the known suitable survival temperature of microorganisms on the earth, it is estimated that microorganisms have no hope of survival.

Although Venus is very close to the earth, people have little interest in Venus for so many years, and rarely send probes to detect Venus. The key factor is that the natural environment of Venus is too extreme. The surface temperature of Venus is very high. Near the equator, the surface temperature of Venus can reach 500℃. The detector developed by people can't withstand such continuous high temperature, let alone work at 500℃ for a long time. The surface temperature of Venus is often so high, because the carbon dioxide in the earth's atmosphere is particularly high, reaching almost 97%.

Although Mars is not suitable for people to immigrate and invest now, people have been looking for whether there is life on Mars, whether there is life on Mars, or whether there was life before. If we can look for direct evidence of life on Mars, it means that life can only rise on the big planets of the Milky Way if circumstances permit. This is of great practical significance for people to update and transform Mars and immigrants to invest in Mars. But it should also be said that the difficulty of upgrading Mars is actually much greater than that of maintaining the earth, so at this stage, the key for everyone is to maintain the earth as the leading factor.

If the temperature of the star is too high and the environment is hard, the current technology can't meet the requirements of the detection level, or the detection of the star is of little significance, then people will give up the detection of the star, and Venus will be abandoned. Looking back on Mars, although it is far from the Earth, its natural environment is suitable, and more achievements can be made in the exploration of Mars, so it will become a popular exploration star in the world, and China will send so many Mars probes.