What is the secret of Mars that has been revealed?

Secret: 2013,65438 On February 9, the American Mars probe Curious made an important discovery and found evidence of the existence of ancient lakes on Mars. The water in the lake may be drinkable fresh water. This is evidence of the long-term existence of humid environment and simple life in the local area.

Grotz JohnGrotzinger, the chief scientist of the Curiosity mission, said that if microbes on Earth were put into lakes on Mars, they could survive and grow.

Extended data:

There may have been an ocean on Mars, but it only existed for a moment in geological history. This analysis defeats the idea that life once existed on this red planet. This is a new theory put forward by Tim Parker of NASA's Jet Propulsion Laboratory in Pasadena, California. In March 20 16, he thought that Mars might have caused water to rush to the planet's surface in the early stage of asteroid impact, at least temporarily.

Parker has always believed that the ocean has spread to half of the northern hemisphere of Mars, and there are signs that the surface of Mars was once covered with water. If Mars is always as dry and dusty as it is seen today, its geological characteristics will be difficult to explain.

These features include polygonal cracks discovered by NASA's rover Opportunity after walking on Mars for more than ten years. On earth, these cracks need water vapor to form, so Parker thinks they strongly indicate that the place where the rover walked used to be the edge of the ocean. "The uniform characteristics of the surface of Mars, which Opportunity walked over 43 kilometers, are very easy to explain. It used to be a shallow sea." He said.

But the problem is that the ancient Martian climate model is difficult to match the state of liquid water left on the surface of Mars, which requires a thicker atmosphere. These atmospheres may soon disappear, leaving Mars that people can observe today.

Baidu Encyclopedia-Mars