Tianwen-1 landed safely on Mars. What is the significance of exploring Mars?

The safe landing of Tianwen-1 on Mars is a step closer to exploring the mysteries of Mars. Exploring Mars has many meanings. After the moon, Mars is the most explored planet by humans and an important subject of fairy tales and science fiction movies. Of the eight planets in the solar system, Mars is the most similar to Earth. It features seasonal changes, early rivers and lakes, and even life. Humankind has launched a number of Mars exploration satellites to explore Mars. Although the results are not very rich, people continue to explore.

First of all, help people understand the evolution of the earth. The mass and volume of Mars are smaller than those of the Earth, so the internal energy of Mars is dissipated faster and enters the later stages earlier, thus showing the complete evolutionary history of the Earth. It plays an irreplaceable role in understanding the past, present and future of the Earth and why it is so unique.

Second. Finding traces of life is one of the goals of Mars exploration and is also a step in mankind's search for life in the universe. Mars orbits the sun close to Earth. Life can exist on earth. Is there life on Mars? Previous exploration has shown that Mars' current environment is not suitable for life. The reason is that there is no water on the surface of Mars, the density and composition of the Martian atmosphere are not suitable for the existence of life, and the climate on Mars is extremely harsh.

Finally, explore the evolution of Mars’ intrinsic magnetic field. Exploration research also shows that Mars’ intrinsic magnetic field is much weaker than that of Earth, but strong residual magnetic fields have been observed in local areas on the surface of Mars, indicating that Mars has a strong intrinsic magnetic field on Earth. Ancient times. After long-term development, Mars' intrinsic magnetic moment has become very small. The inherent magnetic field of Mars changes the result of the interaction between the Martian atmosphere and the solar wind, changing the Martian magnetosphere from Earth-type to Venus-type. This undoubtedly played an important role in the evolution of the Martian atmosphere and the disappearance of water on Mars. Therefore, studying changes in the Martian magnetic field is of great significance to studying changes in the Martian atmospheric environment.