As we all know, as early as fifty years ago, American astronauts have landed on the moon six times, even if some people still question the truth of the matter, but from the moon soil donated to our country, the United States lunar sampling has really happened.
Although, in recent decades, no one has set foot on a planet other than the earth, but scientists around the world have not stopped, but at this stage, everyone's alien landing destination is no longer only placed on the moon, and it can even be said that landing on the moon is equivalent to a springboard, and the next goal is to go to mars farther away, that is, the red planet that is much smaller than the earth, but also a terrestrial planet!
Judging from the Current Mars data in human hands, human beings can stand on Mars in a specific year, and even create a "Mars base" that many people have longed for, which is indeed difficult to say an accurate time, after all, the distance between Mars and us can be much farther than the moon, and the real environment of Mars, which is closer to the sun, is much worse!
However, if the Mars base cannot be built for a while and a half, then is there any life on Mars, or has there ever existed?
The overall climate of Mars can be said to be dry and cold, with an average temperature of only minus 55 ° C throughout the year, but the orbit of Mars is obviously elliptical, so the temperature difference between the aphelion and perihelion can reach 160 ° C. That is to say, the average temperature of Mars is low, the local temperature is lower, but Mars also has four seasons, and it may be cold to minus 133 ° C in winter, but it can also have 27 ° C during the day in summer, so this span is particularly large.
In addition, although Mars is dry, it is not completely free of moisture, which was confirmed by the formation of water vapor by heating Mars soil samples in the United States in 2008. Since 2013, NASA's Curiosity rover has repeatedly found evidence of the presence of water or aqueous substances in parts of Mars.
In June 2015, U.S. scientists said the surface of Mars was wetter than previously expected, that its true water content was greater than in the Arctic Ocean, and that the surface of Mars was covered by a large body of water about 1.2 billion years ago. Later, in 2018 and 2019, scientists discovered underground liquid water lakes and possible saltwater lakes on Mars. Of course, these findings and studies are accompanied by certain uncertainties, but this time is different, the European Space Agency issued an announcement:
In the central area of the Mars Mariner Canyon, the Trace Gas Orbiter found that there is a large amount of water under its ground, and the area of the now proven water bearing area is as large as the entire Netherlands, and the specific form of water presence has not yet been determined, which may be ice or minerals containing water. At this time, some people may wonder, since there may be water on the surface of Mars that has been studied before, what is strange about the discovery of water this time? How did you find out?
The thing is, most of the water we found in the past was concentrated in the polar region, but this time it is different, because this time we found a place where a lot of water is present, the location is actually near the equator, and it is only one meter away from the surface.
Of course, no one has been to Mars, these new research findings mainly rely on Mars probes, this time the probe that found a lot of water was also mentioned earlier, carrying a high-resolution superheated neutron probe on its body, just when the neutron flux mapping, the probe found this area with a lot of water that had not been detected before.
So, what is the significance of this new discovery? Does that mean that Martian life can't be hidden?
It is safe to say that the significance of mars to find water is significant, because this is the place we have been yearning for but has not yet arrived, when more and more water is discovered, we have a better chance to understand how many forms of water on Mars, the shape of water can not only reveal the true state of Mars water resources, but also let us have more confidence in the future when we land on Mars.
In addition, whether there is life on Mars and whether there is still life on Mars, in fact, these two issues are not only the focus of scientists, but also the things that we ordinary people especially want to know. Because, on our earth, most of life is inseparable from water, the earliest life on the earth is also likely to be conceived from water, if there is really water on Mars, but also in the form of liquid water, it really can not rule out that there is still life on Mars, let alone that Mars has been a planet without life since ancient times.
Of course, we have reason to believe that with the advancement of human science, human beings at least have a chance to land on Mars, after all, it is not as dare to approach Venus. Whether there is life on Mars, until the astronauts land on Mars, they can find out more thoroughly, especially those areas where there may be life, and then these mysteries can be solved one by one.