There are traces of the galaxy

Lin Chaosheng's reaction was very face-saving. He gave Li Zhi a thumbs up and said very sincerely: "You are really thoughtful."

Li Zhi burst into a very bright smile on his face, and there were two small canine teeth that did not show easily.He was very happy and accepted the praise with peace of mind, but at the same time he felt a little sad. Lin Chaosheng didn't know that his meticulousness was not the same for everyone.

"Which direction is the Gemini now?" Lin Chaosheng looked up at the night sky, a brilliant sea of ​​stars.

Li Zhi glanced at the time, it was nine thirty-five.

"It's still in the east." He raised his finger and pointed to the telescope set up in the corner. "It's focused, do you want to try it?"

When Lin Chaosheng approached, he was surprised to find that all the parameters of the telescope and theodolite had been adjusted, and even the height of the tripod had been adjusted according to his height.

He turned his head and looked at Li Zhi who was standing aside.

Li Zhi clasped his arms and explained calmly: "I'm afraid you won't know how to do it, so I'll adjust it together."

"You are questioning the hands-on ability of engineering students." Lin Chaosheng said with a smile.He supported the lens barrel with one hand, bent slightly, and aimed his eyes into the eyepiece.

After observing for a while, he turned the knob again and turned the finderscope to other stars.

"It's almost time." Li Zhi looked at his watch and reminded.The time for the meteor shower is getting closer and closer.

The field of view of this telescope is too small. It is best to use the naked eye to observe meteor showers as an amateur. The viewing range is wider and the probability of catching meteors is higher.

Lin Chaosheng retreated, lowered his head and looked at Li Zhi who was sitting on the chair, "The stars I see through the telescope are quite different from what I imagined."

He often reads astronomical newspapers and periodicals. He has long known that the stars seen through the telescope are not as good as the pictures. However, other people's experience is always subjective, and only one can feel it by himself.

Li Zhi looked into his eyes, and suddenly murmured: "I forgot to take the camera." It was only then that he remembered that connecting the camera to the telescope would produce far better results than just seeing it.It's really a secret.

"It's okay, and it's not mainly for watching these." Lin Chaosheng sat on the chair on the other side, seeing Li Zhi's frustrated expression, he comforted him instead.

Li Zhi asked him curiously again: "What did you see just now?"

"I saw the craters on the moon, the rings of Saturn, Betelgeuse," Lin Chaosheng counted slowly, "and many other stars whose names I don't know."

"Betelgeuse..." Li Zhi pondered for a moment, then looked up.

The outline of the Great Winter Triangle in the night sky is very clear, and the stars merge into a river that flows slowly.

He saw Betelgeuse in the constellation of Orion.

A few months ago, someone observed that the star continued to dim, and it was inferred that it had exploded, which triggered extensive discussions in the field of astronomy.Betelgeuse is too far away from the earth, and its explosion will not have any impact on human daily life, but it is indeed a rare astronomical phenomenon, and the probability of occurrence is even smaller than winning 100 million in the lottery.

But it is a pity that it gradually brightened again later, and astronomers analyzed that this change in brightness may be related to starspots, but many people are still looking forward to the supernova explosion, even though it is more than 600 light away from the earth Years are so far away.

"Do you think Betelgeuse will explode?" Lin Chaosheng asked.

Li Zhi said: "Yes, maybe we can see it tomorrow."

"So it exploded 700 years ago."

"It's not impossible." Li Zhi said naturally following his words.

All speculations are still inconclusive, he thought, but no matter what, the probability of Lin Chaosheng liking him is higher than the probability of Betelgeuse exploding.

At this time, he heard a steady voice from the other side, the volume was deliberately raised, probably the president was popularizing science again.But after a distance, I can't hear it very clearly: "Meteors... most of the time we see yellow and white with the naked eye, as well as blue, red, green, and purple, so why are there so many meteors?" color, does anyone know?"

Someone answered blindly: "Because it looks good!"

Someone else sang along: "I am me, fireworks with different colors..."

The president seemed to say something else, but it was covered by intermittent chatter and laughter.

Li Zhi listened patiently for a while, always feeling a sense of déjà vu.

"I remember the last time you were a lecturer at the planetarium and taught science to a group of children." He was still looking at the stars in the sky, not at Lin Chaosheng.

At that time, the surroundings were just as noisy as now, with scattered figures, and Li Zhi's eyes were the same as now, except that he could only see Lin Chaosheng.

Lin Chaosheng nodded, and a look of reminiscence appeared on his face: "Although there are too many people, it is a bit noisy, but it is quite interesting."

Li Zhi sat up straight when he heard this, cleared his throat, and said solemnly: "So why do meteors have different colors? Let Teacher Lin explain to us."

"The chemical reaction caused by the friction between the stars and the atmosphere? Different atoms emit different lights...I haven't done my homework, so I'm not sure." Lin Chaosheng asked uncertainly, "It should be like this?"

There was a strong smile in Li Zhi's eyes, "Almost."

"Then does this kid have any other questions?" Lin Chaosheng tilted his head slightly and asked seriously.

The air was filled with thin and dense noises, and this secret terrace was completely occupied, and there was nowhere to hide in the silence.Li Zhi's heart suddenly went blank, "What kid..."

"Look at how I cooperated with you just now." Lin Chaosheng blinked his eyes, and said with some dissatisfaction, "Why don't you cooperate at all."

"Hey." Li Zhi paused for a few seconds, then suddenly sighed.To Lin Chaosheng, this is obviously a bit inexplicable.

Then he smiled again: "My fault, my fault, I will definitely cooperate next time."

Lin Chaosheng snorted softly, but didn't take it seriously, and continued to look up at the stars.Of course he didn't know that when he looked at Li Zhi, every time he blinked his eyes and flapped his eyelashes, a tsunami would be set off in Li Zhi's heart that no one noticed.

"Did you hear what they were singing just now?" Lin Chaosheng said, lying on the chair with his arms pillowed.

On the other side, lying in a daze, Li Zhi sat up again, "Huh? What?"

Lin Chaosheng still lay there without moving a bit, looking at the night sky, whistled comfortably.Li Zhi was shocked immediately, Lin Chaosheng was able to whistle a nice melody.And he has never been able to whistle since he was a child. Every time he hears others whistle easily and freely, he secretly feels that they are very good.

"What are you blowing about?"

"Just what they sang just now," Lin Chaosheng couldn't believe it: "Haven't you heard it?"

"No." Li Zhi shook his head.

"Did I blow the tune off?" Lin Chaosheng was startled, and reflected on himself, but he still couldn't believe that Li Zhi hadn't heard this familiar song.So he sang softly: "If you can't wait for the Geminid meteor shower to fill the sky, first light nine fairy wands instead." His voice was extremely clear in the endless night.

Why is he singing so well?Li Zhi was a little stunned, and said slowly: "Uh...it seems, it sounds familiar."

"That's right, I'll tell you that you must have heard the ending song of an idol drama that was very popular many years ago."

Li Zhi laughed, "Do you still watch idol dramas?"

Lin Chaosheng quickly dismissed it, "I don't watch it, my mother used to love to watch it..." Then he continued to look at the sky intently, "Oh, I seem to see a shooting star!" He exclaimed.

Li Zhi raised his head immediately, but did not see any signs of meteors appearing, and the voice of the president Kepu continued on the other side.

"Illusion." Li Zhi said.

Sometimes staring at the night sky for a long time may cause hallucinations.The hallucination "shooting star" seems to float over in an instant, and the head and the tail cannot be distinguished. The speed of appearance and disappearance is extremely fast, and the trajectory is usually very short, flashing past the eyes.When Li Zhi observed for the first time, someone reminded him that when staring at the night sky for a long time, he must distinguish meteors from hallucinations.

Maybe it's because I'm looking forward to it too much. What I can't forget is not necessarily an echo, but it may also be a hallucination, just like the low-probability event that Li Zhi has been looking forward to.In the process of getting along with Lin Chaosheng, he occasionally felt that Lin Chaosheng's attitude towards him was also very special. Maybe there was some possible feeling, but this feeling was actually just his illusion.

His thoughts were pulled back, and he heard Lin Chaosheng ask: "Is it an illusion?"

"It's an illusion." Li Zhi's voice became very calm.