The wind is so cool... Li Mo is half asleep and half awake.

When did the window open... I want to close it... Get up... Get up... Why can't I move... I want to shout...

.The voice was also stuck in the throat. I struggled desperately and couldn't make a sound. A gray figure slowly approached, and my head was filled with noise. I felt that my brain was invaded by darkness, and my consciousness was gradually squeezed to the edge of my brain, almost to the edge of my brain.

Out of body.

"Beep...Beep...Beep..." Li Mo suddenly opened his eyes, and his consciousness came back. It turned out to be a dream.

He stood up and walked to the window. Through the glass, he could see the flashing neon lights on the street. After closing the window, he breathed a "shush" and slowly sat down in front of the desk.

Take out the black-covered book, open the title page, and start revising it.

1. According to the "General Principles of Universe Civilization Law", the Gray Shadow Man can conceal from me, but cannot lie.

Added note "The Gray Shadow Man is a Pajero".

2. The questions I asked confirmed that I was useful to him and that my life was not in danger for the time being.

Added a note: "This is questionable." Li Mo hesitated.

3. Guess the identity of the gray shadow man: 1, artificial intelligence 2, special person 3, alien.

Add the note "Definitely an alien".

4. The purpose of the Gray Shadow Man is to force me to study for the time being.

Add the note "Learning Assistance System - Pink Learning Machine".

5. The hall may be in my mind, but it can affect reality.

Add the note "OK".

6. What are the general principles of the law of cosmic civilization?

Added a note: "The specific content of the law is unknown, but it should impose certain restrictions on the exchanges between high-level civilizations and low-level civilizations."

7. Carbon-based organisms, Pajero is a desolate red planet.

Added note "Possibly coveting Earth's soil".

After adding the notes, Li Mo sat quietly at the desk. He read the words written on the black book countless times.

The sun was shining brightly, and Li Mo brought a kettle to the downstairs of Chen Shuxian's house. Chen Shuxian was still lying in front of the second-floor window and stuck out her little head.

"Let's go to the planetarium together?" Li Mo took the initiative to say hello.

"Wait a minute, I'll change my clothes." Chen Shuxian saw Li Mo coming and ran away from the window.

"Aren't you wearing clothes? Why do you need to change clothes?" Li Mo couldn't understand.

After waiting for half an hour, Li Mo's legs were almost numb from standing. Chen Shuxian opened the door and appeared in front of him.

She was wearing a light yellow chiffon dress, with a string of crystals on her neck, and her wet hair, which looked a bit cute.

I still remember the old meeting, in the light smoke and the moon, the jade face has a letter, and the return is near with a smile. Chen Shuxian's appearance has changed drastically, and she is not at all like the female overlord in Li Mo's memory.

He felt a little dazed.

"Have you seen enough? Let's go." Chen Shuxian pretended not to notice Li Mo's gaffe and walked ahead with her hands behind her back.

"Okay..." Li Mo felt embarrassed for his gaffe.

After taking two buses, they arrived at the planetarium.

The planetarium in Mengcheng is newly built, and it is obvious that the old city has not adapted to its existence. Maybe the people in Mengcheng have not adapted to this kind of paid science popularization, because there are not many people in the planetarium.

The hall is filled with popular astronomy books, and the wall-mounted TV plays the wonderful starry sky.

Li Mo stopped in front of an LED screen introducing the galaxy.

The earth's equatorial circumference is about 40,075 kilometers, and the solar system's radius is 40 astronomical units, about 6 billion kilometers (taking Pluto's orbit as the limit), which is equivalent to the length of 470,000 flat earths on the same plane.

The Sun is an ordinary star in the Milky Way. It is located in a spiral arm of the Milky Way called the Orion Arm, about 30,000 light-years from the center of the Milky Way. The Milky Way is a barred spiral galaxy with a diameter of 200,000 light-years and 200 billion stars.

~400 billion.

The entire universe is estimated by the Hubble Ultra-deep Field to have approximately one trillion galaxies. How many Earths or Pajero planets will there be in these trillion galaxies, and how many civilizations will there be?

"Why are you so dazed? I didn't expect you to be so interested in astronomy." Chen Shuxian, who was standing next to her, saw Li Mo standing there blankly and pushed him.

"It's nothing, I just feel that human beings are too insignificant. Compared with the universe, we are like a speck of dust." Li Mo returned to God and said.

"Do you know this photo? It was taken by a detection spacecraft." Chen Shuxian said, leading Li Mo to a picture.

There is only a blurry beam of light in the entire picture. Chen Shuxian pointed to a small light spot on the blurry beam and said: "Look, this is our earth."

"This point of light, Sagan said about it: "On this small point, there are all the people on the earth. There are people you love, there are people you know, there are people you have heard of, there is you, and there is me.

!” Chen Shuxian blinked her bright big eyes.

"In the following sentence, there are you and me. Did you add it yourself?" Li Mo questioned Chen Shuxian's words.

"In 1996, astrophysicist and famous science writer Carl Sagan said a very famous saying: "In this little dot, everyone you love, everyone you know, everyone you have ever heard of

people, and every human being who has ever existed, lived their lives there. It was a place where all the joys and sufferings were gathered, thousands of confident religions, ideologies, and economic doctrines, every hunter and searcher, every hero.

and cowards, every creator and destroyer of civilization, every king and peasant, every young couple in love, every hopeful child, every parent, inventor and explorer, every moral teacher

Every teacher, every corrupt politician, every superstar, every supreme leader, every saint and sinner in human history, all live here - a speck of dust suspended in the sun."

Li Mo recited Carl Sagan's words verbatim. In order to save points, he read several astronomy books, which happened to contain the description of this photo and Carl Sagan's words.

"This photo was taken in 1990 when the Voyager 1 probe was about to fly out of the solar system and at a distance of 6 billion kilometers from the Earth." He added.

"The explanation is great, are you the docent of the planetarium?" a little girl asked, raising her hand, followed by a group of children.

Only then did Li Mo realize that there were crowds of people around him, including parents with their children and couples. They were all immersed in Li Mo's description of the photo.

"Can you help explain the solar system to our children?" She is a kindergarten teacher.

"I... commentator?" Li Mo then realized that he had caused everyone's misunderstanding.

"No, I'm not. I'm just an ordinary astronomy enthusiast." Li Mo smiled slightly.

...Chen Shuxian watched quietly from the side, her big eyes flashing.

She took Li Mo's hand and rushed out of the crowd, and the two of them looked at each other and smiled in a remote corner.

"I didn't expect that just memorizing a paragraph of the book would attract so many people." Li Mo apologized to her sheepishly.

"Your memory is so good. You can memorize such a long book verbatim. Do you like astronomy very much?" Chen Shuxian asked curiously. Li Mo's academic performance is not very good on weekdays.

"I like it very much. Don't you think the universe is very big?" Li Mo was infected by the atmosphere of the planetarium, and he could not tell others the secrets in his mind.

"In your eyes and my eyes, the earth is already very big. It is impossible for us to visit every corner of the earth in our lifetime. But the earth is just a very ordinary planet in the solar system, and there is another solar system around it.

The primitive star cluster also contains countless asteroids and comets."

The more you know, the smaller you feel.

"The solar system is already big enough. If we put the solar system in the Milky Way, it is just a drop in the ocean. And in the Milky Way, there are even 200 billion stars similar to the solar system."

Li Mo felt Chen Shuxian's eyes staring at him brightly, and she spoke slowly,

"The Milky Way is already very large. There is also a super galaxy cluster around the Milky Way. There are more than 100 galaxy groups in this super galaxy cluster that are larger than the Milky Way. If we travel through the super galaxy cluster at the speed of light, it will take at least as long as

It will take 200 million years.”

"Super-super galaxy clusters are part of super-super galaxy clusters, and the coverage area of ​​super-super galaxy clusters can reach 520 million light-years. There is no way to calculate the number of stars in this super-super galaxy cluster. Although super-super galaxy clusters have

The galaxy cluster is very huge, but compared to the universe, it is just a hair."

"The earth is just a speck of dust in the universe." Li Mo said, suddenly feeling sad. He felt that he was too small.

Chen Shuxian looked at the melancholy boy in front of her, and there was a hint of sadness in his bright eyes. She felt extremely distressed.
Chapter completed!