In the last issue, I briefly told you about the importance of the moon to the earth. If there were no moon, the earth would undergo great changes and human life would become more and more difficult.

In this issue, we will take a look at the new hero "wormhole" in this issue. The concept of "wormhole" was first put forward by Austrian physicist Ludwig Flem in 19 16, and was assumed by Einstein and Nathan Rosen when they studied the gravitational field equation in 1930. They think that they can make instant space transfer or time travel through wormholes. Science fiction movies will be familiar to those friends who are full of expectation, yearning and curiosity about the future. Many sci-fi movies contain the mysterious elements of wormholes as the concept of "wormholes". In the sci-fi movies we have seen, we often see the scene of a spaceship passing through a wormhole and then entering another planet. Through the previous issues of popular science, we also know how big the universe is The distance between the two planets is often measured in light years, so the spacecraft can arrive immediately through the wormhole.

The concept of "wormhole" was described in ancient China, and it was described in the book Youming Road written by Liu Yiqing in the Southern Dynasties in China. I'll tell you a short story: The story says that two people went to Tiantai Mountain to collect herbs, and the mountain road in Tiantai Mountain was very difficult to walk. These two people got lost by accident because of collecting medicine. The following month, they ate all the dry food they had with them, but they still couldn't find a way out. Just when they were starving to death, they suddenly saw a peach tree over there. While eating peach trees to satisfy their hunger, they walked along a stream in the mountains. Walking, I suddenly found that Daoxiang was floating. They were surprised and happy. Since they can smell the fragrant rice, there must be someone in front of the stream.

So the two men continued to walk along the stream (in fact, they didn't know it was the entrance of the wormhole). They saw two women who looked like fairies waiting for them. Women could tell their names. They were very surprised. They were taken into the second woman's boudoir before they recovered. I saw in the boudoir: hung with a red curtain and a golden bell at the corner of the curtain. The bell is made of gold and silver, which makes people happy everywhere. Four people chatted in the room for a while and then went into the restaurant to eat. This meal can be said to be very rich, with all kinds of dining tables, singing and dancing accompaniment. When the four of them had finished eating, the maid said, "Please come with me." So the two men married the two fairies. After living happily for ten days, they want to go home. The two fairies did not agree to stay for half a year. It was not until the next spring that the two fairies agreed to go back to their hometown and instructed them to go back. When they got home, they found that everything had changed. After the villagers' description, they have been away for half a year for hundreds of years.

So does the "wormhole" really exist? As early as 65438+1950s, scientists had studied "wormholes". Due to the limitation of historical conditions at that time, some physicists thought that "wormholes" might be used in theory, but the gravity of "wormholes" was too great to destroy everything that entered, so it was impossible to use them in space navigation. Through the introduction of science, scientists found that it can be solved by scientific methods.

Scientists put forward a saying: "If you stand at one end (entrance) of the wormhole at 12: 00, then you will come out at the other end (exit) of the wormhole at 12: 00." This realizes time travel and can greatly shorten the time of interstellar travel. We can also think of it as a whirlpool on the river. It is definitely faster to reach the bottom of the river and cross the whirlpool than to enter the water directly.

There are many opinions about "wormholes", and the following are the most in favor. Do you agree with these views? The first type: "wormhole" is like a space tunnel, comparing space to a ball. If you want to pass through the two center points of the ball, you will go far along the ball, but if you take a diameter near the ball, the wormhole is the diameter; The second type: "wormhole" is a time tunnel. Einstein believed that people can travel in time, but you can only watch it, just like watching movies or browsing flowers, but you can't change what happens because time is linear. What happened in the long river of time was beads of beads. You can see beads, but you can't touch them Personally, I think a wormhole is like a cylindrical magnet. The strong magnetic force line breaks down the passing objects at the entrance, runs in the cylindrical pipeline in the form of waves, and decreases at the exit. You have a different opinion. You can tell me in the comments section.