Is there ice on Mars, and how old is the ice on Mars?

The poles of Mars are permanently covered with solid carbon dioxide (dry ice). The structure of this ice cover is cascading, which is made up of layers of ice and changing layers of carbon dioxide in turn. In the northern summer, carbon dioxide is completely sublimated, leaving behind a layer of icy water.

Since carbon dioxide in the south has never disappeared completely, it is impossible to know whether there is also an ice-water layer under the ice in the south (left). The cause of this phenomenon is unknown, but it may be due to a change in climate caused by long-term changes in the angle between the equatorial plane of Mars and its orbit. Perhaps there is also water deeper below the surface of Mars.

This change in the cover of the poles due to seasonal changes has changed the pressure of Mars by about 25 (measured by Corsair).

It has been observed that there is a small amount of water in the permafrost beneath Mars. There is a little bit of water vapor and a lot of deuterium in the atmosphere, and a large amount of deuterium indicates that a large amount of hydrogen escaped from the water into space in the distant past, leaving only a heavier amount of deuterium, which indicates that there was a lot of water.

There's also Europa, which has an icy surface full of cracks. There are also signs of fresh ice on the surface of Callisto.

There's also Charon, which is mostly made up of ice.

That's all I know. Hope it works for you!

No, there is no water on Mars now, there used to be, but now it is definitely not.

Ice has been stored for 100,000 years, the meteorite was discovered, NASA scientists published a surprising discovery that this meteorite from Mars contains "fossils that may be traces of life", which were formed on Mars three billion years ago, and the discovery pointed out that this piece of rock fragments ejected from the surface of Mars due to the meteorite movement contains signs of life of past microorganisms. The evidence includes complex organic molecules, magnetite, fibrous and other typical bacterial mineral residues. There are also oval structures that live in symbiosis with bacteria.

Human exploration of Mars has so far not made definitive discoveries to prove the existence of life on Mars, but some potentially suitable environments have been explored. It has detected the existence of liquid water lakes on the surface of Mars, discovered huge underground aquifers, and found carbon, hydrogen, oxygen, sulfur, nitrogen and other elements of life, making the hypothesis of life on Mars clearer.

In 2016, scientists discovered the first moving sand dunes in the Snake River Plain in eastern Idaho, very similar to those found by the Mars Reconnaissance Orbiter near the Hellas impact crater, a finding that reinforces the idea that Martian dunes could host life. With a height difference of 75 meters at the edge of the Hellas impact crater, it is a huge ghost dune that has existed for a long time, so it is possible that there was Martian life.

Because of the rain.

Mars is cold enough for snow. There is ice on Mars, and the total amount varies greatly over time. When the axis of Mars is tilted at a small angle to the orbit, there is no ice except for the polar crown.

This is also the recent situation, with the axis tilted by 25 degrees (similar to the Earth's 23 degrees). However, it may be due to the fact that Mars does not have a larger moon to stabilize the spin, and sometimes the axis of rotation may tip over to 60 degrees, causing the polar ice cap to expand outward, perhaps even near the equator.

In order to explain the ** of these ices, scientists have come up with a number of theories for this. They believe that this subterranean ice is left over from an earlier ice sheet. At different climatic stages, the entire area is covered by ice sheets.

But as the climate gets drier, the only thing that has been deposited is a layer of dust that can isolate it from the Martian atmosphere.

The average temperature on Mars is about 218 K (Kelvin, a unit of temperature, i.e., Celsius from absolute zero) (-55, -67), but it has a span from 140 K (-133, -207) in winter to nearly 300 K (27, 80) during the summer day.

An international research team has announced that there is a huge glacial lake in the South Pole region of Mars - if it melts completely, the entire surface of Mars will be covered by a layer of water up to 11 meters thick.

Jeffrey Plott, a scientist at NASA's Jet Propulsion Laboratory who led the study, said the latest data from the Mars Express automated probe showed that the glacier lakes in the South Pole region of Mars were kilometers thick.

In terms of composition, the Martian glacial lake is at least 90% more made up of condensed water. Currently, Prott and his colleagues are analyzing the Martian North Pole data collected in recent months. According to preliminary assessments, the North Pole region of Mars contains no less ice than the Antarctic region.

It is reported that the huge glacial lakes at the poles of Mars are hidden under the red sand, and were first discovered by the "Odyssey" probe of the United States in May 2002. The Mars Express rover, which arrived in orbit at the end of 2003, helped scientists determine the volume of the ice and try to find traces of liquid water.

Plott said only about 10 percent of the frozen water at Mars' south pole was ever covered on the Martian surface.

He noted: "We are always faced with the question: what else is the water in? Plott speculates that there may also be abundant water stored in natural reservoirs beneath the surface of Mars.

In addition, according to earlier announcements, there are small amounts of methane gas in the Martian atmosphere, and they are likely to be products of microbial activity. Scientists believe that Mars was once a planet as alive as Earth, with oceans, rivers and active volcanoes on its surface – including the highest volcano in the solar system, Mount Olympus (more than 22 kilometers high and 3 kilometers deep).

Scientists point out that the Mars Express rover has achieved unprecedented and important results, and with the help of the data it transmitted, experts have drawn high-resolution three-dimensional images of the Martian surface, which will help astronauts land on Mars in the future.

It's not a lot of rumors, we have to refute the rumors, we have to believe in ourselves, we have to develop ourselves, we have to explore ourselves.

On December 20, the European Space Agency (ESA) unveiled an incredible set of images of a massive crater on Mars captured by the Mars Express space probe, which is full of ice and looks like a milk lake.

Located within the Martian Arctic Circle, south of a sand dune called Olympia undae, this crater was formed by a huge meteorite hitting Mars long ago. The bottom of the pit is 2 kilometers deep and miles (about kilometers) in diameter, and the pit looks like it is covered with snow, but in fact the pit is full of ice and is kilometers thick.

The ice is distributed on the edge and bottom of the crater in the form of a thin layer of frost, and the reason for the formation of this ice is the phenomenon of "cold trap", which contains ice in the crater, so that the air on the ice surface is cooled but does not sink, forming a layer of cold air, preventing heat conduction, forming a protective shield, so that the ice in the crater can remain stable and prevent the ice from melting.

The crater is named after Sergei Korolev, the Soviet Union's chief rocket engineer and spacecraft designer and the father of Soviet space technology. He was involved in the "Sputnik Project", was the designer of the first artificial Earth satellite launch vehicle, the chief designer of the first manned spacecraft, and sent the first human into space.

I didn't find it, like UFO, it's all fantasy.

Yes, water was found, but it was salt water, which contained a lot of salt.

Found, very little, at the pole.

I'll go up tomorrow and take a look, and I'll tell you about it.

I don't know what to think about, there is no real news.

Found out. There is ice on Mars. There are many secrets.

Yes, there is indeed solid ice on Mars.

It's just speculation, speculation, whether there is or not, only the moment when humans climb on it, or the image that comes back to it!!

It was indeed discovered that at the poles of Mars, similar to the north and south poles of the earth, there may be life if there is water, although it is salt water, but similar to the sulfur springs on the earth, there will be bacteria, and there may also be life on Mars.

Water was found, but the water on Mars at more than minus 200 degrees Celsius actually did not freeze

There is no accurate information yet, and there should be none.

Great, you can go to Mars in the future.

The U.S. Mars Odyssey rover found signs of the presence of a large amount of frozen water in the South Pole region of Mars last year. Russian and American scientists jointly wrote an article in the US journal "Science" on 27 July, saying that in their current study, they not only used the observations of the gamma-ray and neutron detection devices on the "Odyssey" to analyze the seasonal changes in the dry ice layer in the North Pole region of Mars, but also combined the observation data of the laser altimeter carried by the US "Mars Global Surveyor," which is also currently working in Mars orbit. This altimeter directly measures the thickness of the dry ice in the Arctic region of Mars in different seasons.

The results of the analysis of Russian and American scientists show that when the dry ice covering the North Pole of Mars disappears with the change of seasons, the large area below is characterized by rich underground frozen water. The head of the research team, Dr. Mitrofanov of the Russian Space Research Institute, said that "in some of these places, the frozen water content by volume exceeded 90 ".

According to Boynton, a member of the research team at the University of Arizona in the United States, the frozen water of the Martian North Pole may be located in a very shallow layer of soil below the surface of Mars. He said that digging anywhere in the North Pole of Mars is about a few centimeters to 30 centimeters or so, and you may find water in a frozen state.

c。Step 1: Find the argument for the argument.

Argument: It is speculated that Mars was covered with ice sheets in the early days, and there was a lot of volcanic activity there.

Argument: Some round, flat-topped hills on the surface of Mars have also detected materials such as zeolite, sulfide and clay from volcanic eruptions under the Earth's glaciers.

Step 2: Analyze the options one by one.

Item a: The existence of volcanoes at the south pole of Mars is the current situation, which has nothing to do with how early Mars was, and it is impossible to determine whether there will be more volcanic activity.

Item B: The geology of Mars is inactive, which has nothing to do with whether there is an ice sheet in the early stage of Mars, and it is impossible to determine whether there will be more volcanic activity.

Item C: Emphasizing that zeolite, sulfide and clay are unique substances produced by subglacial volcanic activity, and building a bridge between the two is the premise for the argument to be valid, and is elected;

Item D: Ancient bacteria and water sources have nothing to do with the Martian glaciers and many volcanic activities in the stem, irrelevant options, excluded;