According to a planetary science paper published in the British journal Nature and astronomy on the 28th, a European team of scientists has detected a number of subglacial water bodies of different sizes under the south pole of Mars. The results show that there are a lot of wetland areas under the Martian south pole that keep liquid due to high salt concentration. It is known that there are subglacial lakes in the south pole of the earth. In previous studies, Mars advanced surface and ionosphere detection radar (MARSIS) carried by the Mars Express space probe of the European Space Agency (ESA) once found a similar water body under the south pole of Mars. The existence of subglacial lakes is of great significance to astrobiology and to determine whether there is a habitable niche on Mars. However, there has been a great controversy about the liquid properties and composition of this water body. Although the geological record of Mars is incomplete, the available data still show that it has undergone great changes throughout its history. Under the warm and humid climate experienced by Mars, the local basement of the ice sheet in the south of Mars may melt; now, the extremely low surface temperature of Mars can not hold liquid water, and the temperature in polar regions can reach – 143 ℃ in winter. < p > < p > this time, with the help of the technology used by the earth satellite to detect the Antarctic subglacial lake, Elena patinari, a researcher at the third University of Rome, Italy, and his colleagues analyzed the Mars radar data of a 250 × 300 square kilometer wide area around the Martian water body. Mars radar was launched on the Mars Express in 2003 and began to collect data in the summer of 2005. Since there was no obvious evidence that there was basic liquid water below the polar region of Mars, there was also a scientific debate on the stability of liquid water in the polar region of Mars today. But this time, the team finally determined the properties of the previously discovered subglacial lake, and distinguished other smaller water bodies from the main water bodies based on the dry matter bands. < / P > < p > the team believes that these water bodies are high salt solutions, that is, salt dissolves in the water to form high concentrations of salt water, which may explain why these water bodies can remain liquid in the cold environment at the bottom of Mars’ South Pole. Is there liquid water on Mars? This is a fascinating question. The answer to the question can be the starting point of all magnificent stories. If there is liquid water, there is the possibility of life; if there is life, there will be Biology Mars, which seems desolate, can become a different kind of image. Water itself is indeed a strange liquid, sometimes it can still exist as a liquid at very low temperature; it seems to be frozen, and the undercurrent is surging under it. This gives Mars more possibilities. Now, researchers believe that high salt water does exist below the south pole of Mars. As for what’s in the water, it’s another story to write. After 12 years, “world class Super project” Shantou Bay Tunnel ushers in a historic breakthrough today