Liquid water was found on the surface of Mars. What is the significance of this discovery?

It is reported that these narrow, black and finger-like marks only appear in the warmest season of Mars, but disappear in other seasons. Scientists say that this seasonal situation occurs because salt lowers the freezing point of water. But the most important significance of this discovery is that water is the origin of life, so this time it is found that there is flowing water on Mars, and the next goal of scientists is to investigate what microbial forms of life exist on Mars now. The content of this conference was successfully predicted by many foreign media.

Lu Jinde often goes back and forth to Georgia Institute of Technology, and now he is a doctoral student. He was an undergraduate at the University of Arizona when he began to study the black stripes on the crater wall in the high-definition video taken on the Mars exploration orbiter. After the conference was published, some people thought that there was running water on the surface of Mars and water under Mars. If finally confirmed, this discovery is of special significance to the search for extraterrestrial life and human migration to Mars.

Some detection results show that Mars may have global underground ice reserves and some water vapor in the atmosphere, but there is no evidence of liquid water. Scientists have long speculated that there is also a high probability under the polar ice sheet. According to the earth's experience, under the pressure of glaciers, the melting point of ice decreases. On the other hand, the existence of salt on Mars may also reduce the melting point of ice. Under the dual factors, flowing liquid water may also be hidden in icy glaciers. The Mars Express of ESA described the structure of Mars Antarctic layer with Mars Advanced Underground and Ionospheric Detection Radar (MARSIS), and Italian scientists analyzed MASIS? The results of measuring the thick ice layer near the south pole of Mars in the past three years.

RobertoOrosei, the principal researcher of the MARSIS experiment, said that the depth of this Mars lake is difficult to predict in radar reflection, but it contains at least hundreds of millions of cubic meters of water. EnricoFlamini, another senior member of the team, said that it has not been observed whether the underground water body of Mars can provide a suitable habitat for microorganisms. He said: "It can be said that there is water on Mars, which is liquid, salty and in contact with rocks. I think if this water is on the surface of Mars, it can sustain life.