Why did human immigrants choose Mars?

20 15 On September 28th, scientists said that there are not only water that has solidified into ice at the poles, but also liquid water that only appears and flows in warm seasons. Scientists point out that their latest findings strongly support the theory that salt water flows on some slopes on the surface of Mars in summer.

There are four seasons.

178 1 year, William Herschel, a famous astronomer in the history of astronomy, inferred that the rotation axis of Mars is also tilted according to the way the marks on Mars move with the rotation of Mars, and the tilt angle is almost the same as the rotation axis of the Earth. In this case, Mars should be like the earth, with winter to spring and cold to summer.

3. There are traces of life

201910/4 Gilbert Levin, a former NASA scientist, said that traces of life were found on Mars more than 40 years ago. Levin said that the research was conducted in 1976 as part of Viking project, which involved searching for traces of life in Martian soil samples.

positional information

It is about 55 million kilometers away from the earth, and the farthest distance is over 400 million kilometers. Close contact between them occurs about once every 15 years. In 1988, the distance between Mars and the earth once reached about 58.8 million kilometers, but in 20 18, the distance between them will reach 57.6 million kilometers.

But on August 27th, 2003, the distance between Mars and the Earth was only about 55.76 million kilometers, the latest time in 60,000 years. However, according to astronomers' calculations, during the 800 years from 1600 to 2400, the distance between Mars and the Earth can only rank third. According to the calculation results, by September 2, 2366, the distance between them was about 557 10000 km.

By August 28, 2287, the two will be closer, with a distance of about 55.69 million kilometers. Generally speaking, the year when Mars is close to the Earth is the best time to land on Mars and observe it on the ground.