Mars is one of the eight major planets in the solar system. It is the neighbor of the earth. It has many similarities with the earth. It is also a rocky planet and is in the habitable zone. Therefore, when human beings go out of the earth and begin to explore the universe, Mars is the first planet to explore and pay close attention to.
We can see through the telescope that Mars is a red planet, which is different from the blue of the earth, because there is no liquid water on the surface of Mars, and the environment is not very good. In order to explore Mars, scientists have launched many probes to Mars, including orbital exploration and landing probes.
The rover that can really see the surface of Mars is still a lander. There are not many Rovers on Mars. The most famous one is curiosity. It landed on Mars in 2012. It is the first nuclear powered lander. It has strong power and can move for a long time in the harsh environment of Mars.
After landing on Mars, curiosity began to explore while moving, sending back countless pictures and data about the surface of Mars. One of the most important discoveries is that curiosity once detected methane in the Martian atmosphere. At that time, scientists were excited and speculated that there might be life on Mars.
However, at that time, the methane concentration detected by curiosity was not high. Some scientists thought it might be caused by geological activities. Later, people gradually forgot about it. But recently, curiosity has detected methane on Mars, and this time the concentration is three times higher than previously detected.
According to the New York Times, the strange discovery was first reported on Saturday after obtaining an internal email from Ashwin vasavada, a scientist on the mission. NASA confirmed the discovery Sunday in a statement explaining how curiosity’s Mars Sample Analysis (SAM) instrument detected about 21 parts per billion of methane – much higher than ever before.
This concentration has once again raised scientists’ expectations for the existence of life on Mars. As we all know, methane also exists in the earth’s atmosphere, and the methane in the earth’s atmosphere is usually produced by organisms. So will the high concentration of methane detected on Mars also be produced by organisms?
At present, NASA has not made any follow-up explanation for this discovery. Scientists believe that the high concentration of methane found on Mars does not necessarily mean that it is produced by organisms, but also may be produced by geological activities on Mars. Since curiosity has no advanced instruments to determine the source of methane, we know the specific measurement results, and we can not determine whether the source of methane is biological or geological, or other sources.
Human beings have been looking for the possibility of life on Mars since they began to explore Mars. At first, scientists didn’t think that there would be life on such a desolate planet as Mars. However, with the continuous discovery of the probe on Mars, now we can basically determine that there is water on Mars, but we don’t know the specific content of water.
Scientists have also found traces washed by water on the surface of Mars. According to this, Mars was also a planet rich in liquid water long ago, with a thick atmosphere and magnetic field. There may be Martian life. But later, somehow, the Martian magnetic field disappeared, and the atmosphere became thinner and thinner. Without the protection of the magnetic field and atmosphere, the water on the surface of Mars began to gradually drain, becoming a desolate desert.
Although the liquid water on the surface of Mars has been lost, scientists speculate that there may be a lot of liquid water stored under the surface of Mars. Recently, curiosity has drilled two holes in Gail crater of Mars, and also found new evidence that water once existed on Mars. And the probe also found ice sheets at the poles of Mars, which shows that Mars is not a planet without water.
Water is the source of life. If there is still water on Mars, then the possibility of life is also great. This time curiosity detected a high concentration of methane in the Martian atmosphere, once again magnifying this possibility. However, to determine the source of Martian methane, it is impossible to rely on current probes.
In order to determine the source of methane on Mars, it is possible that in the near future, a manned landing on Mars with advanced instruments is needed to explore the source of methane. In many cases, it is impossible to rely on the probe alone. Only human beings on Mars can solve the mystery.
Curiosity has taken many strange pictures of the surface of Mars. Some of the pictures show things that people can imagine. For example, curiosity has taken a suspected part of the object and a suspected mushroom. From these photos, it is difficult to judge whether they are natural or artificial stones or life.
If human beings land on Mars and find strange things on the surface of Mars, we can well judge whether it is a similar stone or an artificial object. If there is a living thing on Mars, what curiosity has taken is a picture, and we can’t be sure that it is life. But if we stand on Mars and find a living thing, we can be 100% sure that we want to uncover it The mystery of life on Mars still needs a manned landing on Mars.
In fact, this wish is not far away. NASA plans to land a man on Mars in 2033. China’s space technology is developing rapidly. It is believed that the pace of Mars exploration will be accelerated in the near future, and the possibility of landing a man on Mars and exploring the existence of Martian life will be realized.
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