The earth is the home where human beings have lived for hundreds of years, and it is also a planet. After human beings walk out of the earth, we see the solar system beyond the earth. At this time, we also understand that there are eight planets in the solar system, four of which are earth like planets, and the planets in the habitable zone with the earth are Venus and Mars.
Although Venus and Mars are also in the habitable zone, the environment above them is very bad, and no life has been found on them. With the continuous development of human science and technology, our observation technology is also improving, and we can focus on the outside of the solar system. At this time, scientists found that there were hundreds of billions of stars in the galaxy, of which only about 7% were yellow dwarfs like the sun.
The mainstream stars in the galaxy are actually red dwarfs smaller than the sun, which account for more than 70% of the whole star family. Under normal circumstances, the number of planets in red dwarf galaxies should be less than that in the solar system, but the real observation results show that the number of planets in many star systems is far more than that in the solar system. What’s the matter?
If so, the number of planets in the solar system should be far more than it is now, but why is there only eight left? Through research and analysis, scientists have finally found some answers. It turns out that all these things are played by Jupiter. As we all know, Jupiter is a gas giant planet, and it is the largest planet in the solar system.
According to our observations, Jupiter is 317 times the mass and 1316 times the volume of the earth. Although such a huge Jupiter can not be compared with stars, the difference is not particularly exaggerated. The mass of Jupiter is about one thousandth of that of the sun. If you put the other seven planets together with Jupiter, you will find that in front of Jupiter, the other seven planets are small.
If you add up the other seven planets in the solar system, the total mass is less than half that of Jupiter. The birth of such a huge planet in the solar system is both a good thing and a bad thing for the whole galaxy. Let’s first talk about the disadvantages of Jupiter being too big for the solar system. As we said earlier, scientists have observed that many galaxies in the Milky way have far more planets than the solar system.
According to the scale of the solar system, after the birth of the early sun in the center of the nebula, the number of planets formed by those leftovers should be very large, about 100. But why were there only eight left? All this is related to the birth of Jupiter. We need to know that the solar system was born in a nebula. In the early days, a celestial body was first condensed in the center of the galaxy, that is, the later star sun.
When celestial bodies appear in the center of the nebula, the debris and dust of the whole Nebula will continue to condense to the center under the action of gravity. So in the early days of the solar system, the closer it was to the center, the denser the matter was, and the easier it was to form giant planets. So after the birth of the sun, there is a huge celestial body next to it, which is Jupiter.
Therefore, the birthplace of Jupiter is not at its present position. At its present position, in the early days, a planet as big as the earth was born at most. After the birth of Jupiter around the sun, it is unable to move around the sun, at this time due to the early solar system is still very chaotic, the number of planets as many as 100.
The strong power of the solar wind pushed Jupiter out, so Jupiter became a huge object that collided everywhere. In the process of its scurrying around, many planets are smashed, and the debris condenses to Jupiter. In this way, Jupiter is getting bigger and bigger in the process of continuous impact. Lost the enemy, achieved himself, and finally stabilized on the current track.
It can be seen that the birth of Jupiter was a disaster for the whole early solar system. Apart from not daring to collide with the sun, other celestial bodies would be broken as soon as they collided, which was not a level at all. As a result, there are only eight planets left in the solar system with more than 100 planets. It is really not easy for the earth to be so lucky to survive.
You know, when the earth was in the early solar system, but within the impact range of Jupiter, if there was no very strong lucky index, there would not be earth now. Although the birth of Jupiter has made the solar system lose most of its planets, the benefits will continue to show when the solar system stabilizes.
One advantage is that the solar system is more stable because of the dramatic reduction in the number of planets. You know, there is gravitational interaction between celestial bodies. If the number of planets in the solar system is as high as 100, then the distribution of planets will be dense after all. At this time, there will be a very obvious gravitational influence between the orbits of planets.
Even if the whole solar system is stable later, because the planets are too close to each other, there may be friction and collision, so that the solar system does not have a stable environment. A stable galactic environment is of great benefit to the birth of life. Some people may have said that if there are hundreds of planets in the solar system now, there will be a large number of planets in the habitable zone. At that time, life may be common in the solar system, not just the earth.
So is that really the case? Theoretically, the more planets there are in the habitable zone, the more likely life planets will be born. It is possible that there will be many living planets in the habitable zone of the solar system, but don’t forget that once there are more planets, the stability of the galaxy will decline, and celestial collision events often occur, which is not conducive to the evolution of life.
Therefore, if there are hundreds of planets in the solar system, there may be many living planets, but these living planets may be primitive living planets, unable to produce intelligent life. It is possible that at that time, the earth could not complete the evolution to a civilized planet. The reason is very simple. The planets are too densely distributed. Frequent celestial collision events often cause mass extinction, making it impossible for life to continue to evolve.
This shows that there are only eight planets left in the solar system, which is a great thing. In addition, after Jupiter stabilizes, its orbit is just in front of the earth, which is a great position. It blocks countless extraterrestrial visitors for the earth. As long as an asteroid flies to the inner galaxy, it will be pulled by its strong gravity when passing through Jupiter, and finally crash in Jupiter or become its moon.
So, in a sense, Jupiter is also the patron saint of the earth. Through this situation of the solar system, perhaps we can also provide a direction for the future search for extraterrestrial civilization. The birth of any intelligent civilization is not so easy. It takes a long evolution of life to realize it.
And the evolution of life needs a very stable galactic environment, and a galactic environment to be stable, in addition to the stars in the center, it may also need a giant planet. As long as we observe and look for the gas giant planets in the Milky way, the number of planets in such galaxies may be relatively small, so the possibility of the birth of living planets in the habitable zone will be very high, and the possibility of the existence of civilized planets will also be very high.
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