The solar system is very small in the universe, so is there extraterrestrial life in the solar syste

There may be. Human exploration of the Earth is far from enough, and even the solar system has not been explored, so it is not known whether there is extraterrestrial life in the solar system.

Possibly. The solar system is insignificant compared to the universe, so there may be extraterrestrial life in the universe, but it has not yet been discovered.

It is very likely that, although there is no definitive evidence of extraterrestrial life, it is likely that there is another "Earth" or "Earths" in the solar system.

Generally speaking, there is indeed no other life in the solar system at present, and human beings have detected that the solar system seems to be indeed only the earth has life, and the other planets are lifeless.

Absolutely. But not easy to find.

Far from it. In our galaxy alone, there are more than 200 billion stars like the Sun. They carry countless planets.

It's hard to believe that there is nothing suitable for biological growth. And now it is found that the adaptability of life is far wider than originally recognized. Organisms have been found to be able to survive in an environment completely devoid of water.

Therefore, it can be assumed that there is life on not only other planets in the universe. And there should be no less. Of course, if there is life, it is possible to develop into intelligent life, that is, "aliens".

That being said. But it's not easy to find them. Because celestial bodies are far away from each other.

There are only a handful of them that are tens of light-years away. The odds of having aliens there are very small. Others are hundreds of thousands of light-years away.

In this way, it takes twice as long to go back and forth with an airwave signal. And the universe is full of all kinds of cluttered radio signals. It's hard to sift through artificial signals.

So it's not easy to find them.

With the scientific knowledge we have at the moment, it is very difficult to communicate with them. But the science and technology that people have mastered may be much more advanced than ours. It's hard to say that they can come and contact us.

But I'm afraid it's not a good thing. Because the wisdom gap is too big. In their eyes, we are like lower beings.

This can be a nightmare for humanity.

The earth is the only planet in the solar system with an intelligent civilization, but with the level of human science and technology, it is not possible to detect the existence of extraterrestrial life.

So if extraterrestrial life exists in the solar system, which planet is the most likely? When scientists are looking for planets in the solar system where extraterrestrial life may exist, they will rely on the conditions under which life on Earth may form and survive.

So the first possible planet is Mars, which is located on the edge of the habitable air and land zone, and has a thin atmosphere, through exploration studies, Mars has traces of ancient ditches washed by rivers, which indicates that there was a large amount of liquid water on the surface of Mars in ancient times. Mega stuffiness.

Jupiter has several other moons that are also the focus of scientists, such as Ganymede, which has a dense atmosphere and is also a planet with the potential for extraterrestrial life.

It's not good news, the main reason is that if there is really life, maybe we humans will also face a disaster, this kind of thing is unknown, so I feel bad.

That must mean that these beings may cause us some harm, such as that they may invade our Earth and make our Earth a planet suitable for them.

Because we can't be sure that extraterrestrial life will be friendly or unfriendly, and even if it is, it may be a relatively low-level civilization.

At present, only life is found on Earth in the solar system, and no life has been found on other planets so far, but there is no guarantee that it will be found in the future.

Life depends on water, air, sunlight, suitable temperatures, and nutrients necessary for life to survive. In the solar system, the Earth is at the right distance from the Sun, so the light and temperature that the Earth receives during the day and at night are suitable for life. In addition, the size and weight of the earth are also very suitable for survival.

In the area where the atmosphere and the sea and land come into contact with each other, there are animals, plants, and microorganisms all over the earth, which is the circle of life matter and life activities on the earth, and we call it life. The thickness of life is about 20 km.

In the solar system, there is only life on Earth, and there are no animals, no plants, or no life on the other planets.

Why is there no life on the other planets of the solar system? This starts with the conditions of life's existence.

First of all, the existence of life needs to have the right temperature. If the temperature is too high, the movement of the atoms is too strong and it is difficult to polymerize into molecules; If the temperature is too low, the proteins and nucleic acids will freeze, and life will not matter.

From a temperature point of view, the distance between the Earth and the Sun is unique. The average surface temperature of the Earth is about 22 degrees Celsius, and most of it is suitable for the growth and reproduction of life.

Among the planets of the solar system, the Earth's closest neighbors are Venus and Mars. Venus is closer to the Sun than the Earth, and its surface temperature is about 400 degrees Celsius warmer than that of the Earth; Mars is farther from the Sun than the Earth, and the temperature on the surface is 40 or 50 degrees Celsius lower than that of the Earth, and the temperature difference between day and night is large. The other planets are either closer to the Sun than Venus or farther away from the Sun than Fire, so they do not have the temperature conditions suitable for life.

Secondly, the existence of life requires the presence of liquid water, and there is a large amount of water on the earth, and the vast majority of water is liquid. And on other planets, even if there is water, it is not liquid.

In addition, the existence of life requires an atmosphere of appropriate thickness and density to protect life from cosmic rays and provide the right amount of free oxygen. The Earth's atmosphere fulfills this condition.

Other planets such as Venus, Mars, Jupiter, Uranus, Neptune, and even Saturn's sixth moon have atmospheres, but the atmospheres on these planets or moons are almost oxygen-free, so even if some form of life may occur on these planets, it can only be extremely primitive.

Based on the above analysis, such life on Earth is unique in the solar system.

However, many people believe that in the vast desert universe, there must be celestial bodies with life, and even celestial bodies with highly intelligent life like humans.