Since ancient times, people have the desire to land on the moon, and we are also very concerned about every move of the moon. Although we can see the moon almost every day, and many enthusiasts buy professional equipment to observe the moon, how much do you know about the origin of the moon?
Don’t think it’s a simple question. The origin of the moon is still a mystery that puzzles the scientific community, and there is no exact explanation. At present, there are four hypotheses about the origin of the moon. Let’s take a look at them.
1. Split theory
Earlier, some scientists thought that the moon was a part of the earth. It was only by chance that the earth threw out a piece of debris and eventually became the moon under the action of time. According to this view, the moon should be much younger than the earth. But it turns out that the rocks on the moon are hundreds of millions of years bigger than those on earth. In other words, the existence of the moon is longer than that of the earth, so this view has been abandoned by most people.
The idea is that the earth and the moon formed at a similar time. In the primordial solar nebula, the two are like brothers, forming in a similar way. However, as for the difference in composition between the earth and the moon, some scientists explained that when the earth was formed, the planet core with iron as the main component was formed first, and then the non-metallic materials began to agglomerate. The moon, that is, after the earth was formed, used the remaining components
It’s made up of. But this view is not convincing to most people.
This hypothesis used to be the most reasonable one. It believes that the moon and the earth are originally located in different positions of the solar nebula. Due to the strong gravity of the earth, the moon deviates from its original orbit and becomes a natural satellite of the earth. The observation results show that the moon ball moves away from the earth at a speed of 3.8 cm per year. Although this viewpoint can explain a lot of Earth Moon phenomena, some people still have doubts and continue to open up new viewpoints.
4. Impact theory
At present, this hypothesis has been accepted by most scholars and is the latest one among the four viewpoints. According to this theory, there were many nebulae in the early formation of the solar system, and collision often occurred. One of them, a planet of similar size to Mars, collided with the earth. After the collision, the material on the surface of the planet gradually dispersed into the universe and eventually formed the moon. At present, this statement can explain many basic characteristics of the earth and the moon. But there are still doubts.
This is how science moves forward in questioning. Guys, which hypothesis do you think is reasonable? Welcome to comment.