Mars is considered to represent the "future of the earth" in evolution, so the related exploration research on Mars has attracted much attention for a long time.

What is the structure of the surface of Mars?

Is there solid or liquid water?

What evolutionary process has Mars geology experienced?

… There is a great deal of interest in these questions both by scientists and by the general public.

Photo by China News Agency reporter Sun Zifa

【Editor: Yang Yanyu】