Lead
Mars is one of the mysterious planets in the Earth's solar system, and many scientists have been interested in Mars since ancient times, believing that there may be extraterrestrial civilizations on Mars.
The speculation about Mars has not been confirmed, but when NASA explored Mars in 1996, it accidentally discovered the mysterious tunnel of Mars, and this tunnel looks like it was built by man, so is there really an alien civilization?
1. Mysterious tunnels.
In 1965, the Soviet Union's Mars-3 probe sent back a photograph of a tunnel resembling giant stripes, and from the photo, the interior of the tunnel was still light.
At that time, there was a strong interest in this mysterious tunnel, and it was believed that this tunnel was most likely left behind by an alien civilization.
The tunnel is now a terrifying ravine, 1,000 kilometers long, 3 kilometers wide and 2 kilometers deep, and the light in that photo is shining into the sun.
In order to verify this gully, NASA sent a probe to Mars again in 1976, and when the probe flew near Mars, it took several photos of this gully, but the ravine did not look like it looked like in the photo at all, but an ordinary gully.
So NASA considers this ravine to be just an ordinary gully and believes that there are no signs of life on the surface of Mars.
But after the Mars rover landed on Mars in 1976, organic matter was found in the sand of Mars, which is most likely evidence of life on Mars.
This Mars exploration made NASA have a strong interest in Mars, believing that there is a high probability of life on Mars, so in 1996 NASA launched an orbiter to Mars again, this time the probe is called "Mars Global Surveyor", the mission of this probe is to find evidence of life on the surface of Mars.
After the Mars Global Investigator rover arrived on Mars, it took pictures of the surface of Mars, and in the photos people found a mysterious tunnel in the photo, which has a very strange shape and looks like a transparent glass tunnel.
NASA has analyzed the tunnel, but scientists have not come to a conclusion as to what the structure of the tunnel will be.
At the time, there was speculation that the tunnel was left behind by an alien civilization, but others believed that the tunnel was a naturally formed ravine.
Later, through calculations and observations, scientists believed that this tunnel may be the traces left by the water river on Mars, because the atmosphere of Mars was very thin at that time, the temperature of the fire was extremely low, and the water would turn into ice in extreme environments, so this tunnel may be an ice river on Mars.
But the tunnel in the photo taken by the probe looks like it is transparent, so scientists have experimented with ice on Mars, and found that when the ice is exposed to sunlight, the ice produces a substance similar to transparent glass, which appears to be transparent.
So scientists eventually believed that the tunnel was due to a transparent substance produced by the water of the glacial river on Mars under the sun's rays, but this transparent material is extremely hard, so it will protect the glacial river below from being frozen.
2. Ancient rock formations of Mars.
Mars not only has mysterious transparent tunnels, but also many traces similar to Earth, the most famous of which are the ancient rock formations on Mars.
In the ancient rock formations on Mars, scientists have not only found traces similar to those on Earth, but also found evidence of the presence of liquid water, which is very old, 6 billion years old.
These ancient rock formations can exist on the earth for a very short time, because the earth's atmosphere and temperature are very suitable for life, so the earth's rock layers will not only be corroded by the atmosphere, but also by biological erosion.
The ancient rock layers on Mars have existed for 6 billion years because the atmosphere of Mars is extremely thin and the temperature of Mars is very low, so in this environment, the rock layers will be very hard and not easy to be corroded, and there is no life on Mars, so the rock layers on Mars will not be eroded by organisms.
There are traces of liquid water in these ancient rock formations, which proves that there was liquid water on Mars 6 billion years ago, but there is no liquid water on Mars now, this is because the atmosphere of Mars is thin, the temperature of Mars is low, liquid water is very easy to evaporate, and the atmosphere on Mars has no protective layer, so liquid water will be blown away by the solar wind, so there is no liquid water on Mars.
But scientists believe that there is no liquid water on Mars now, but there may have been liquid water on Mars 6 billion years ago, and there is evidence of liquid water in ancient rock formations on Mars, which makes scientists believe that life on Mars is very likely.
So NASA launched a probe to Mars in 1996, and the mission of this probe is to find evidence of life on the surface of Mars, this probe is called "Mars Pathfinder".
After the Mars Pathfinder probe arrived on Mars, it took pictures on the surface of Mars, and in the photos, a transparent tunnel was found.
The tunnel looks very transparent, and the shape of the tunnel is very strange, but the tunnel looks like it was built by man, so this tunnel has aroused great interest among scientists, and it has been studied and discussed for a long time.
Through calculations and observations, scientists believe that the structure and shape of this tunnel are extremely strange, but the length and width of this tunnel are the same as the length and width of natural ravines, so in the end, scientists believe that this tunnel is likely to be a naturally formed ravine.
3. The extreme environment of Mars.
Scientists believe that life on Mars is highly likely, but others believe that the environment on Mars is too extreme for life to survive in such an environment.
The atmosphere on Mars is very thin, and the oxygen content in the atmosphere is very small, so people cannot breathe on Mars, and the temperature on Mars is very low, all year round is dozens of degrees below zero, and life cannot survive in an extremely low temperature environment.
And at night, the temperature of Mars will drop to more than minus 100 degrees, which is not found on Earth, so life cannot survive in such extremely low temperature conditions.
And the atmosphere on Mars is very thin and has no protective layer, so there will be strong ultraviolet radiation, which will destroy cells and cause great harm to life.
Therefore, scientists believe that life cannot survive in this environment, and there is no liquid water on Mars, which also makes it extremely unlikely that life on Mars will survive.
The Mars rover took pictures of the surface of Mars, but found no traces of life on Mars, so scientists believe that it is extremely unlikely that life on Mars will survive, but it is not ruled out that life on Mars is extinct, but no evidence has been found.
epilogue
The environment on Mars is extremely harsh on the survival conditions of life, and scientists believe that there is no life on Mars, but some scientists believe that there may be life on Mars, but it has not yet been discovered.
The exploration of extraterrestrial life has always been a topic of great concern, and the discovery and exploration of Mars have provided new clues and perspectives for this exploration.
However, the current limitations of human exploration of Mars are too great for us to rush too much, and with the advancement of science and technology, it is expected that mankind will have a deeper understanding of the mysteries of Mars and other planets.