Where might the water on Mars and Earth come from

Hello! One hypothesis is that the water on Earth is brought by ice comets who bring a lot of water to Earth!

Mars may have had water in ancient times, ice is still possible at the poles of Mars, and water vapor has been found in the Martian atmosphere.

There is a hypothesis that there may have been life on Mars in ancient times, but the Martian industrial development was too serious, causing a large amount of carbon dioxide emissions (which may also be the reason why carbon dioxide accounts for 95% of the Martian atmosphere), causing environmental degradation and unsuitable for survival, so the Martians went to other planets ......If we humans don't protect the Earth, the Earth could also become a second Mars in the future.

The unsolved mysteries of Mars:

For decades, scientists have been puzzled by the vast differences that exist between the two sides of Mars. The planet's northern hemisphere is flat and low-lying and the flattest part of the solar system, a terrain that may have been caused by the flow of water that once flowed over the surface of Mars. But the surface of the southern hemisphere of Mars is very rugged, with many huge craters, about miles to 5 miles (4 km to 8 km) above sea level than the basins in the northern hemisphere.

Recently obtained evidence suggests that the large difference between the northern and southern hemispheres of Mars is caused by long-term space rock impacts.

In 2003, the European Space Agency's Mars Express discovered methane, the simplest organic molecule, on the red planet for the first time. Most of the methane in the Earth's atmosphere is produced by life, such as cattle digesting food. Methane in the Martian atmosphere is known to have been in a stable state for only about 300 years, so it is unclear whether it continues to produce this gas.

Of course, methane can also be produced in the absence of life, such as volcanic activity. The European Space Agency's Exomars spacecraft, which is scheduled to launch in 2016, will study the chemistry of the Martian atmosphere and learn more about methane-related issues.

The surface features of the red planet, revealed by a large number of missions to Mars, suggest that its previously warm environment was sufficient to ensure the flow of liquid water on the Martian surface. These features include structures such as large oceans, river valley networks, river deltas, and minerals that need to form in the water environment. However, current early Martian climate models cannot explain why this warm environment existed, as the sun was fainter then than it is now, so some have to wonder if these features could be caused by wind or other factors.

There is some evidence that the warm climate of ancient Mars allowed for the presence of liquid water on at least one side. Other discoveries suggest that ancient Mars was cold and wet, not cold and dry or warm and humid, as is often argued.

Although there is plenty of evidence that liquid water once flowed on the surface of Mars, it remains a mystery whether this was only an occasional occurrence or whether there is still liquid water flowing on the red planet. The atmospheric pressure of Mars is very low, about one hundredth of the Earth's atmospheric pressure. However, the black, narrow lines seen on the planet's slopes suggest that salt water may flow over the surface of these slopes each spring.

The climate, gravity, and magnetic field, Mars seems to have no magnetic field.

Scientists have discovered that one of the impacts has so hotten the Martian atmosphere that water cannot remain stable on the surface of Mars for half a Martian year. After that, it rained on Mars for 12 Martian years in a row. During this period, the water evaporated by the impact returns to the surface in the form of heavy rainfall, with an average annual rainfall of up to meters per Earth.

One Martian year is about the same as an Earth year. ）

After heavy rains, Mars shuddered and cooled rapidly, and all surface water froze into ice for 1,000 to 100,000 years. After another 10,000 to 100,000 years, solar radiation converts the ice on the surface of Mars directly into water vapor, which transfers the water to the polar regions of Mars and other cold regions, where it freezes again.

Personally, I think that in the future, human beings are likely to build a scientific research base on Mars, similar to the space station, which can build a relatively complete ecosystem for scientific researchers stationed on Mars. But it is unlikely that the entire human population will migrate to Mars. Because the cost of construction is too high, whether it is material, technical, or immigration, the gains outweigh the losses.

Science and technology can change everything impossible, once upon a time, high-speed rail made the distance on the earth is not a problem, modern medicine has overcome the incurable diseases of the past, I believe that with the progress of science and technology, we will overcome difficulties one by one and live a better life on Mars.

From the perspective of science and technology, human beings may one day be able to land on Mars. As for whether humans can live on Mars, that's another matter, and what kind of thing life is, humans have not yet fully understood.

What is the real cosmic life system, what kind of ** it is, human beings do not know anything now. Whether life can survive on its own planet for a long time is a mystery, and we only know that being far away from home can cause many people to suffer from soil and water. What would happen to a person far from his own planet is a complete mystery, and whether or not life has a planetary effect is completely unknown to mankind in reality.

The modern scientific system can only be limited to the various understandings of human beings, and can only be grasped in the long-term crawl.

Whether humans can survive on another planet and what life is remains to be studied. Not all planets are suitable for life, after all, we have found that all the planets around us, species like the earth are very easy to overflow, and it is really impossible to find. However, human beings are living on the earth where life can be flooded in an instant, and the reproduction of human beings, as a species of advanced intelligence, has been so vicissitudes for thousands of years.

This should be a well-known question, and if we want to talk about human beings wanting to gain a foothold on another planet today, it is certainly not based on the theory of vicissitudes.

I don't think it's possible, because there hasn't been a particularly good evidence of it yet. So it may not really be possible in the future, and it will take time to investigate.

Humans may come to Mars to live, because Mars also has the same atmosphere as Earth, and the environment is relatively similar to Earth, so it may be suitable for human habitation.

It is possible for human beings to live on Mars in the future, and the environment of Mars is the most similar to that of Earth, and if there is a water source, it can give birth to life.

There are no clear conclusions, and not enough scientists say that life on Earth may have "migrated" from extraterrestrials. Some astrobiologists say that there is growing evidence that life on Earth may not have originated on Earth, but that it was born from extraterrestrial sources, and that comets "sit" about 3.8 billion to 4 billion years ago. This theory is known as the germ theory.

Peter Ward, a biologist from the University of Washington in Seattle, said that life on Earth may have come from Mars, and there is at least evidence that life on Earth is extraterrestrial. Chandra Wickremasinger, an astrophybiologist at the University of Buckingham in the United Kingdom, said that the Earth continues to exchange organic matter and even life with planets in nearby galaxies. Wickremassinger has co-authored a number of academic articles** about the discovery of life that "aboard" comets from outer space to Earth.

Mars Introduced

Mars is one of the eight planets in the solar system, the fourth closest planet to the sun, and the second smallest planet in the solar system after Mercury. Mars is called the "Luminous Star" in ancient Chinese books, and the "Mythical Mars Star" in ancient Western (ancient Rome) is the only guardian planet of the 12 zodiac signs Aries, not the guardian planet of Scorpio.

Mars is basically a desert planet, with sand dunes and gravel on the surface and no stable liquid water, a thin and cold atmosphere dominated by carbon dioxide, with sand and dust suspended in it, and dust storms occur frequently every year. Mars has a polar crown of water ice and dry ice at both poles, which waxes and wanes with the seasons.

The flaws of Mars itself led to this result.

Mars is much smaller than Earth and has much less attraction to objects. This makes the water on the surface of Mars "en masse". The mass velocity of Mars, the second cosmic velocity (escape velocity), is about 3 times the average velocity of water vapor molecules.

However, the energy of water molecules is not average, and the speed of movement of a few water molecules can reach 5 times the average speed.

After all, only a few water molecules have such energy, so it is a slow process for the water on Mars to be evaporated, but after thousands of years, as long as this water does not turn into ice, it will definitely leave the atmosphere of the star.

For a long time, Mars did lose its water. Analysis by researchers at the University of California suggests that within a million years of the second ocean, Martian water may freeze back into ice and remain underground again. Or it becomes water vapor, which gradually evaporates into the atmosphere. Astronomers can even calculate the amount of water that Mars has lost, and work backwards to extrapolate the amount of water that Mars once contained.

Until now, there is still controversy about the origin, abundance and history of water on Mars, and scientists still do not give up asking "where did all the water on Mars go". from warm to extremely cold; How did the transition from wet to dry happen? Perhaps these questions will be answered only after humans actually set foot on Martian soil.

There are long rivers on Mars, whether it has water or not, at least they used to be a river with water, it is a river formed by water, this river is still relatively straight, like a fast-flowing water rushing straight, and it is not right, there are dozens of kilometers long Caoze River at the junction of Jinhu County and Hongze District, it was originally from Hongze Lake to Baima Lake, it is a naturally formed river, and later people added wei along the river shape, but it is zigzag, Jinhu Hongze is a plain without mountains, and the river on Mars is more straight than the river with more water on the earth, This may be done by manual grooming. From the perspective of Mars**, there are more large rivers on Mars than there are large rivers on Earth, and at least three rivers are larger than the largest rivers on Earth, how did so much water come to be? They are more concentrated, maybe these places used to be places with a lot of rainfall, and the rain on Mars in ancient times was more than the current rain on the earth to form a bigger river than the big rivers on the earth.

Mars is much smaller than Earth, and its gravitational pull is much smaller, and water is evaporated by sunlight and cannot be absorbed by its own gravity and scattered into space

I think there are many reasons for this: 1: Gravitational reasons.

2: The thin atmosphere directly leads to the heating of the ground and the temperature is too high during the day, 3: It is not a stable cosmic environment, and there are not a few meteors hitting Mars a few years ago, which will affect the protection of the atmosphere from the moisture on the ground.

If there was a lot of water on Mars in the past, it means that there is relatively stable atmospheric protection, but now it is less, it means that the atmosphere has changed, and there are internal factors on Mars and the cosmic environment that cause changes in the atmosphere. (I think the latter is very likely, because there is an asteroid belt between Mars and Jupiter, and there will always be some that will hit Mars) so this could be a research topic.

Yes, there is nothing but in a solid form, and there is a small amount of solid water at the poles.