Tang Wenzhe continued: "In fact, people's initial understanding of the solar system began with the 'nine planets'. But in 2006, scientists kicked Pluto out of the list of planets. ”

Pluto is located in the outer circle of the solar system, very dim, Pluto's diameter is about two-thirds of the moon, and the distance from the sun is about 40 times that of the earth and the sun, you must know that the earth is already 150 million kilometers away from the sun, so the average temperature on the surface of Pluto is only about minus 230 degrees. In 1930, the Lowell Observatory confirmed the movement of the object. The observatory took verification photographs and sent them by telegram to the Harvard University Observatory on March 13, 1930. The news of the discovery of the ninth planet caused a sensation all over the world. The Lowell Observatory received more than 1,000 naming suggestions from around the world, and finally 10-year-old schoolboy Venesha Bernie from Oxford, England, suggested naming the planet after Pluto, the god of the underworld in Roman mythology, because of his interest in ancient Roman mythology. Pluto, the god of hell in most languages around the world, has long been associated with the name of the Lord of the Underworld. Professor Ding gushed about the history of the discovery of Pluto.

In 2006, the world's scientists convened an important astronomical conference to renegotiate the definition of the planets in the solar system, and the meeting finally concluded that there are several criteria for judging a new definition of a planet: first, it needs to revolve around the sun. Second, it can become nearly spherical under its own gravitational pull. Third, it must be able to clear its orbit of other celestial bodies other than satellites. However, Pluto is only able to meet the first two criteria and does not meet the third criterion. The eight planets, including Earth, are able to clear their neighboring bodies, so the space around them appears empty. But Pluto has passed through Neptune's orbit and there are other objects of similar size nearby. As a result, Pluto was eventually kicked out of the nine planets and was defined as a dwarf planet. The so-called dwarf planets are those objects that are nearly spherical in orbit around the sun, and they cannot clear other objects in their orbit except for the moons, and of course Pluto is not alone, located in the Kuiper belt outside Neptune, which contains many dwarf planets like Pluto. That said, but that didn't affect the level of interest that deep space explorers are interested in Pluto, which I have a special interest in. Tang Wenzhe said.

"It's very good that Tang has this idea, and finding another way is also a positive way of thinking, to be honest, I don't care much about Pluto, and I haven't had an in-depth study of Pluto, which is very worthy of my pride. Professor Ding felt a little hungry when he said this, so he quickly ate a few more bites of pizza.

"I think Pluto is a distribution center of the legendary 'parallel world', starting from the principle of the immortality of matter, the soul is still there after death, the key is who can travel between the 'parallel worlds' at will, that is to have special cultivation and attainments, the key is to be selected under certain conditions, in order to become a 'parallel world' traveler. Tang Wenzhe said with a serious expression.

The pizza in Professor Ding's hand was so frightened that it fell on the table, and he was about to pick it up again, but he knocked down the soda next to him because of nervousness.

Wang Mingxia quickly got up and took a napkin from the table to help Professor Ding clean up the stagnant water on the table, and opened another bottle of canned soda and put it in front of Professor Ding.

Professor Ding looked at Wang Mingxia's quick reaction and agile movements, and said, "Thank you." ”

Professor Ding pushed down his drooping glasses and said, "Student Tang, it's not for the teacher to criticize you, now it seems that you have fallen into the quagmire of idealism from a lover of deep space exploration, and what you just said about the soul is completely nonsense, completely incompatible with the cosmology and values of modern science and technology, this is a wrong point of view, here I must give severe criticism to your research, you have deviated from the right track of deep space exploration." ”

"I humbly accept the teacher's criticism, but I am not alone in the scientific path of exploring the soul, I remember in October 2012, Eben Alexander, a well-known neurosurgeon with a Ph.D. from Harvard University in the United States, published "Evidence of Heaven". In the fall of 2008, Alexander went into heaven after experiencing a deep coma, and when he woke up, he recalled that heaven was a place full of clouds, and he believed that human consciousness was beyond the scope of modern science. This viewpoint is not only from a scientific point of view, but also from the level of spiritual belief in the preliminary exploration of the truth of the universe. Tang Wenzhe argued.

"It has been reported all over the world that a person enters a deep coma or loses consciousness in the so-called 'heaven', but the conclusions are diverse, and the conclusions that cannot be reached through repeated experiments are not called science, they can only be regarded as ideas. For example, some dying patients may see their own life experiences, and some people may say that they seem to have entered another world, hear some pleasant sounds in a rather quiet scene, and even imagine the realization of unfulfilled wishes in life, and other strange phenomena, which sound amazing. Later, a British scientist showed through research that all this may be the brain's deception, if a person's heart suddenly stops beating, but the brain's consciousness has not died, so after being rescued, there are many fantasies, which are caused by many complex reasons and have little to do with the parallel world. Professor Ding said confidently.

"Is the universe really that quiet? This question has been confirmed by our 'Heavenly Eye', and the sound of the cosmic background is very unique. After Tang Wenzhe finished speaking, he switched the display on the big screen to the vast universe, and from Professor Ding's computer came a burst of 'ding ding dong' sound and the strange sound of whistle whistle.

"It's a terrible sound, the sound of running water, and the sound of leaves rubbing in the wind, and the screams of whistles. Li Ting asked curiously when she heard a voice coming from the Internet.

"This is the cosmic background sound received by China's 'Sky Eye', which has aroused the great attention and association of scientists. Tang Wenzhe said.

"Student Tang, I think your research direction is correct, so can you explain the source of these cosmic background sounds? Professor Ding encouraged.

Professor Ding felt as if there was something wrong with the logic of speaking, and just now he was still criticizing Tang Wenzhe's idealistic thoughts, but now how can he affirm Tang Wenzhe's research direction. So he immediately added: "We must criticize Tang's wrong things, encourage the correct things, and only have to have arguments about scientific things to reveal the truth?"

"Yes, the teacher's understanding of deep space exploration is more thorough than mine, and the theoretical views are clear, I just follow Professor Ding's line of thought, put forward some preliminary understanding of some phenomena, and also ask Professor Ding to check my research direction. Tang Wenzhe said.

"Of course, we learn from each other to improve our understanding of the universe together," Professor Ding said. In fact, it is the current level of science and technology, our understanding of the universe is still in a very rudimentary stage, and even some views themselves are wrong, the scientific giant Einstein gave up his original understanding of some points of view to the late stage, such as about black holes and quantum entanglement, Einstein felt that he could not explain it, and could only ask God for help, not to mention that it is inevitable for us mortals to make mistakes in their understanding of the universe, and it is lucky to not make mistakes, haha!"

Tang Wenzhe said: "The question just raised by Professor Ding, what phenomenon does these cosmic background sounds represent, there are many explanations for this magical phenomenon, one is that the signal source is very similar to the regular pulse signal emitted by pulsars, which may be that alien civilizations disguise their signals as pulsars for deep space communication, in order to hide their positions and prevent them from being discovered by other alien creatures. Another explanation is that the universe is a vacuum environment that lacks the medium needed for sound to propagate. In fact, those sounds are inaudible within the hearing range of the human ear, but in fact, the universe is not a complete vacuum, the universe is full of all kinds of particles, and the planetary systems and nebulae are very dense, and they can transmit sound. They can now be picked up by the specialized instruments of the 'Sky Eye' and converted into strange sounds that we can hear. After further analysis, scientists concluded that this sound may be the sound of the planet's crustal movement, meteorite impact and other activities. If the sound were coming from Pluto, it would take about 4.5 hours for a radio signal traveling at the speed of light to travel back to Earth from Pluto. ”

"Oh, I see, I think this analysis is still reliable, and the conclusions can be confirmed by further scientific experiments. Professor Ding immediately affirmed.

"Could that be a radio code for alien communication? I sound like a radio wave. Wang Mingxia said.

"I think this female student's consideration is constructive, we can't rule out this possibility, scientific conclusions often start from the negation of the original thing, this question is asked in depth and reasonably. ”

Li Ting laughed out loud when she heard Professor Ding's words: "Teacher, how do I feel a little confused, is there still an intelligent creature in this universe as you said, or the existence of a 'parallel world' as Tang Wenzhe said, what is the conclusion?"

"This classmate has a very unique skeptical vision, and it is true that in deep space exploration, we ourselves are sometimes hesitant, sometimes misled by our own wrong views, and sometimes we feel that we have been deceived, which may be the mystery of deep space exploration. Tang Wenzhe, are you right? Haha!" Professor Ding said that he was also happy, and quickly opened the can of soda that Wang Mingxia had just sent over and took a sip.

Tang Wenzhe continued: "However, suddenly one day, a line of letters popped out of my computer, which was not an email at all, but a string of letters mixed in the strange background sound of the universe, which was clearly written; ’”

"Haha! That must have been the beginning of the prank, did you get the key? I think someone must have hacked into your computer and sent you a message to start the game, you must have been fooled. Professor Ding said with a smile.

Li Ting said from a technical point of view: "Wen Zhe, can you tell us about the process of receiving the key, I think Professor Ding is reasonable, it may be that your computer has attracted a network attack, the key depends on whether this information has adverse consequences for you, including whether it has implanted a virus into your computer, stolen your bank account password, etc." ”

Wang Mingxia was also very interested in this matter and said: "Sister Li Ting is right, Manager Tang, don't be gullible and deceived, you have to control your money bag." ”

"The process of receiving the key is very important, please come and listen to it, and we will help you answer the questions and solve your doubts together, and check for you. Professor Ding added.

Tang Wenzhe said: "A year ago, on a stormy night, I was driving alone on the way home after work, and after driving on the highway for a while, I suddenly felt as if something hit my chest, I quickly stopped the car slowly in the safety barrier of the highway, turned on the double jump lights, and touched the pocket of my suit jacket, guess what I found..."

"Ah, don't stop talking suddenly, it's scary, just explain what you find, go on. Li Ting said a little impatiently.

"I pulled out a small, delicate wooden comb wrapped in a silk scarf from my jacket pocket. After Tang Wenzhe finished speaking, he put his small wooden comb and a silk scarf folded into a square on the table.

Professor Ding and Li Ting's eyes suddenly focused on the mysterious thing in front of them, and they felt very surprised, as if they saw the items brought by aliens, only Wang Mingxia was very calm, and did not look panicked at all, continued to eat the pizza, reached out and touched something in a small backpack he was carrying, and then withdrew his hand and picked up a can of orange juice on the table and drank a few sips.

Li Ting recovered from her panic and said, "What can this little wooden comb be used for?"

"I think it's an ordinary wooden comb, it's more delicate than the workmanship on the market, from the color and pattern I think it's made of the rarer Italian briar, this kind of briar grows on the cliffs along the Mediterranean Sea in Italy is very rare, although Greece and Algeria produce briar, but the Italian briar pattern is very suitable for men's pipes, I also have a briar pipe, and I occasionally use it, so I am very familiar with this kind of briar, and I know it at a glance. Professor Ding looked at the delicate little wooden comb and said.

After hearing this, Li Ting curiously wanted to get the small wooden comb, but as soon as she touched the small wooden comb, she was tightly pressed by one of Tang Wenzhe's big hands and said, "Don't touch it." ”

Li Ting quickly retracted her hand when she heard this, revealing a nervous expression, while Wang Mingxia almost laughed, she knew that Tang Wenzhe liked this small wooden comb the most, and she often saw him combing his hair, and it was best not to touch the things that men like without permission.

Tang Wenzhe's expression was quite serious, he took the small wooden comb in his hand, and continued: "At first, I also thought it was an ordinary small wooden comb, and after the car arrived home, I parked the car in the parking space in front of my house and turned off the car. I've been thinking about the question, who put this thing in my pocket while I'm driving on the highway, and when I'm driving on the highway, my windows are closed, the sunroof is not open, and I'm alone in the car, what the hell is going on?"

Li Ting laughed after hearing this: "Haha, it must be which girl you are talking to in the office, and finally at the end of the conversation, you came to a hug with that girl, and the girl secretly wrapped the small wooden comb she was going to give you in a beautiful silk scarf when you were emotionally involved, and stuffed it into your suit jacket pocket while the chaos was in the chaos, you don't recruit it from the truth, otherwise let our fencer Wang Mingxia teach you a lesson, Mingxia, are you right?"

Wang Mingxia didn't smile, her two eyes were fixed on Tang Wenzhe's eyes, and she was listening to him carefully; "Wenzhe, you keep talking, what happened later, what happened?" Wang Mingxia was a little worried in her words.