The students of Guanshishan Academy have noticed that a new building with a unique shape has been built near the school gate.

Unlike other buildings, which are mostly made of bricks, this building uses a very traditional strip of stone for the walls.

And the strange thing is that there is no shortage of land in Guanshishan Academy, but the area of this building is less than 100 square meters, and it is erected straight there.

When I looked at it from afar, I thought it was a big pillar.

"Lord Wang, are these stars in the sky really burning planets?"

Seeing that Chen Dali was doing the final assembly work for the astronomical telescope, Li Yan couldn't help but confirm with Li Kuan again.

Without him, this statement is too weird.

"Of course, like the sun that we see every day, it's actually a huge fireball that burns constantly. As for the other stars you see, they're all pretty much the same, except that they're not as big because they're farther away than the sun. In fact, very few of the stars you can see are smaller than the sun. ”

Li Kuan took out all his meager astronomical knowledge.

However, even this little bit of fur is enough to shock Li Yan.

As the son of Li Chunfeng, Li Yan also has a deep study of Qimen gossip, astronomy and other things.

If according to the normal historical development, after Li Chunfeng, he will even become the Taishi Ling of the Tang Dynasty, in charge of the royal astrological divination and other work.

"All bigger than the sun? This...... Doesn't this mean that there are countless suns in the sky? Impossible, right? ”

Li Yan felt a mess in his mind.

What Li Kuan said today completely subverted his cognition.

"It's impossible. The universe is so big that our earth is just a drop in the ocean, not even a drop in the ocean. When you see the sky full of stars at night, count how many stars there are. These stars are far away from us, and even the light will take tens of thousands of years to reach them. ”

"Huh? It will take tens of thousands of years for light to arrive? ”

Li Yan looked at Li Kuan like a fool.

No matter how you hear this, it doesn't feel reliable.

Does light also have speed?

If there is, it's unimaginably fast, right?

His Royal Highness the King of Chu actually said that many stars are in places where light needs to travel for tens of thousands of years.

It's ridiculous!

"Forget it, I'll tell you about this thing when the theoretical research of the Gewu Academy is more sufficient. In short, all you need to know is that these stars in the sky are actually some planets like the sun.

What purple micro star belongs to its own land, it is the emperor star of the middle sky of the North and South Dipper, which is the lord of the official lu, and has the function of relieving misfortune, prolonging life, and systemizing; What Wuqu Star is the master of wealth, the master of the palace of wealth, becoming the god of wealth, in charge of wealth and martial arts; And what Zhiduoxing, Wenquxing and the like, all of them are lies. ”

As soon as Li Kuan's words came out, Li Yan didn't dare to answer at all.

If you believe this, won't you smash your own Aya's job?

If these celestial phenomena are all fake, and have nothing to do with fate or anything, then what did the emperors of the past arrange for people to study them?

Besides, since His Royal Highness the King of Chu said that these are all lies, what does he want to do when he builds this observatory?

Isn't it a contradiction?

"Lord Wang, it has been installed, all of which are installed according to the drawings you provided, and now you can try the effect."

At this moment, Chen Dali's voice broke the strange atmosphere of the scene.

"I'll give it a try!"

Li Yan took a deep breath, put behind what Li Kuan had just said, and prepared to try out this astronomical telescope with a rather peculiar shape and a large volume.

According to Chen Dali, just for the two special lenses, he did everything he could.

He felt that it was the best lens he had ever sharpened in his life.

I don't know how effective it is.

"Don't look at the sun!"

Li Kuan saw Li Yan fiddling with the astronomical telescope, and was about to turn to the sun, but he stepped back to the side, and the cold sweat on his forehead almost scared out.

This is an astronomical telescope.

Now that the sun is blazing, if Li Yan points the astronomical telescope at the sun, a scream can be heard in minutes.

From now on, Datang will have one more blind man.

Even the lenses of this astronomical telescope, which had just been installed and had not yet exerted its own energy, had to suffer some damage.

"I'm sorry, His Royal Highness the King of Chu, the student just forgot about it for a while."

Li Yan saw Li Kuan looking at him angrily, and immediately realized what mistake he had just made.

The telescope is not a rare object in Guanshishan Academy, and Li Yan has one.

He had long known that telescopes could not be looked at the sun, otherwise his eyes would be blind.

Although this astronomical telescope is not very different from ordinary telescopes, there are some things that should be connected.

I almost destroyed my eyes just now.

It's scary to think about it.

"Yan clan, when you go back, you must arrange special personnel to watch the telescope at this observatory, on the one hand, to prevent someone from operating it improperly and destroying it; On the other hand, it is also to avoid something like this from happening. ”

Li Kuan ignored Li Yan's apology, and turned back to Xu Jingzong on the side and instructed.

"Rest assured, Lord Wang, the observatory has now recruited more than a dozen teachers and students from the Gewu Academy as users, and they will take turns guarding this astronomical telescope to record changes in the sky and the discovery of new stars at any time."

Xu Jingzong is real, as steady as ever.

"Lord Wang, you just said that the shining stars in the sky are actually burning planets like the sun. Isn't the moon we see every night also a burning planet, and isn't there no Heavenly Palace and Chang'e on the moon? ”

Qing'er asked a cute question on the side, which attracted everyone's attention.

Oh, yes.

According to His Royal Highness the King of Chu, isn't there no Chang'e on the moon?

"Wrong!"

"Huh? Wrong? So Chang'e really exists? That...... So she really can fly, right? Has she ever been to Datang? Is she really immortal? ”

Qing'er asked several questions in one breath.

On the side, Xu Jingzong, Li Yan, Liu Jie, Wang Xuanwu and others all looked at Li Kuan curiously.

"I'm wrong, I'm saying that the moon is not a burning planet, it's just an ordinary planet like our earth. The reason why it shines at night is because the sun shines on the moon, creating reflections.

As for whether there is a heavenly palace on it, whether there is Chang'e or not, wait until the evening when you use this astronomical telescope to see for yourself, and you will know what is on the moon. ”

"This ...... Can this telescope see what's on the moon? ”

Li Yan asked in surprise.

Practice is the only criterion for testing truth.

He is still very clear about this motto of Gewu Academy.

Although what Li Kuan said just now was incredible, if he could really prove it with his own eyes, he would still be willing to believe it.

That's the good thing about being young, it's a lot faster to accept new things.

"It depends on what you mean by seeing clearly!"

Li Kuan was also a little curious.

This astronomical telescope, but it took a lot of points to exchange the drawings from the system, and then Chen Dali wasted a lot of glass lenses to polish the qualified lens, how the effect is, it depends on the performance tonight.

"Lord Wang, Li Jiang Shilang from the Taishi Bureau came over, saying that he was ordered by His Majesty to go to the observatory to have a look."

At this time, Li Chunfeng came.

"Li Yan, your Aye's nose is very smart."

As soon as Li Kuan said this, Li Yan's face was flushed.

"Lord, I'm ...... I haven't mentioned the observatory to him, and I haven't been home for a month. It's true! I swear to God! ”

"Look at your nervousness, this observatory is not a secret, and I am not prepared to hide it from anyone."

Li Kuan felt a little funny, Li Yan, who has always been confident, turned out to be so sensitive.

……

"His Royal Highness the King of Chu, the comet appeared in the east last night, something big must have happened."

When Li Chunfeng came to the observatory, the first thing he said when he saw Li Kuan was strange.

At least in Li Kuan's opinion, it is strange.

"Shoshiro, why do you say that?"

Li Kuan had just popularized the knowledge of astronomy to Li Yan and others, and as a result, a divination came.

"The stars of the year are late in the near future, and the disease is in the distance. If you are confused in the near future, you will be sick in the near future, and it will be late in the distant future. The trip to fill in the stars, since the sight of the stay, the reverse, the reverse, the constant parallel, there is no benefit to the disease. Taibai, Chenxing, see in the morning, the beginning is late and then the disease, the disease is ambushed; Seeing at night, the beginning is slow and late. Comet ......"

"Stop!"

Without waiting for Li Chunfeng to finish speaking, Li Kuan couldn't stand it.

What are you talking about?

"Ayer, if the comet appears, it's likely to be seen again tonight. It just so happens that the astronomical telescope of the observatory has just been assembled, and then we can use this telescope to observe the specific situation of comets and improve our understanding of comets. ”

Li Yan inexplicably felt that he had always been omnipotent in his eyes, and today he seemed to be a little ......

He didn't want to see his Aya continue to make a fool of himself.

"Astronomical telescopes? Could it be that His Royal Highness the King of Chu built this observatory in order to use this astronomical telescope to observe celestial phenomena? ”

Li Chunfeng naturally knew what the telescope was for.

The telescope has the word astronomical in front of it, and I can imagine what it is for.

"That's right, otherwise you think this king built this observatory for what purpose? Is it difficult to compete with you Taishi Bureau for jobs? ”

Li Chunfeng: ......

……

As night slowly falls, more and more stars begin to come out in the blue sky to decorate the beauty of the night.

Although they are not as brilliant as the sun or the moon as clear and white, the dreamy light of the twinkle and sparkle makes the night sky even more exciting.

"Comet, still east, look!"

Li Chunfeng's eyes were good enough, and he quickly found the shadow of the comet without a telescope.

"Li Yan, adjust the direction of the astronomical telescope, so that you can see what the comet looks like."

Li Kuan didn't go back tonight, and directly played night watching the sky with Li Chunfeng and others at the observatory.

In fact, in his previous life, Li Kuan also had an observatory in middle school when he was in high school, and he was fortunate enough to see it once.

I haven't touched this thing since, so I'm a little curious.

"Lord Wang, I see it! Really saw it! ”

Li Yan has been constantly playing with astronomical telescopes this afternoon, and he has been very proficient in operation, but in a few minutes, he found the comet that Li Chunfeng pointed to.

"Get out of the way! Get out of the way! ”

Li Chunfeng unceremoniously squeezed Li Yan aside and occupied the astronomical telescope himself.

Li Yan was helpless, who let this be his own Aye, so he had to stand beside him aggrievedly.

That itchy look, Li Kuan felt funny when he saw it.

"The tail of this comet is like this, like a cloud."

Li Chunfeng observed intently for a few minutes, and then said with a sigh.

"Li Shoshirou, according to the inference of this king, this comet should be mainly composed of a bunch of various gases. When they are far from the Sun, the comet takes on a spherical shape due to the low temperature.

As it gets closer to the Sun, the material on the comet turns into gas due to the rise in temperature, which may be ice or something else. So we'll see it pulling a long tail and flying like a big cloud. ”

Li Chunfeng, as the authority of the Tang astronomical community, if Li Kuan can make him accept his own views, then it should be of great help to improve everyone's understanding of astronomy.

"Lord Wang, if it is according to this statement, then we will continue to observe this comet, and when it gradually moves away and disappears, it will turn back into a sphere."

Li Yan felt that he could live on the observatory in the next few days and observe the changes of the comet in front of him.

If it is true that the comet is slowly getting smaller and its tail is slowly disappearing, then it can prove that Li Kuan's theory is correct.

"Yes, there are many such comets in the universe. In the past, when there were no astronomical telescopes, we could only observe a small percentage of comets moving, and we should be able to find more comets in the future. If you see more and find a pattern, you will find that the movement of these stars is actually not so mysterious. ”

Li Kuan hopes to increase the influence of science in Datang.

Although the development of astronomy will not have much impact on the productivity of Datang in a short period of time, it can greatly improve everyone's curiosity about Gewu and other knowledge.

Curiosity is important.

It's like a woman who has curiosity about a man, so it's much easier to catch up.

And once a person has a curiosity about scientific knowledge, it is relatively easy for him to accept scientific knowledge.

In the future, there will definitely be various discoveries in Guanshishan Academy, so that the Tang nobles and the people will slowly accept these discoveries.

"His Royal Highness the King of Chu, using these astronomical glasses to see the comet is much clearer than what I saw last night. I suddenly wondered, could this astronomical telescope be made bigger and clearer? ”

Li Chunfeng felt that Li Yan was ready to use the astronomical telescope to watch the comet, so he reluctantly moved his body and gave up the telescope to Li Yan.

Of course, he didn't rest and began to communicate with Li Kuan.

"Theoretically, it is possible, but the lenses are more difficult to make, and they need to be improved slowly. In the future, I plan to let the observatory and the glass workshop cooperate well to see if we can make a better astronomical telescope. ”

"Can the Taishi Bureau also arrange for a few people to help watch the celestial phenomena at the observatory for a long time?"

After using the astronomical telescope, Li Chunfeng never wanted to go back to the days of looking at the stars with the naked eye.

In fact, in his heart, he hoped that Li Kuan could also help the Taishi Bureau make an astronomical telescope, but he was not embarrassed to bring it up for the time being.

"Naturally, there is no problem with this, the door of the observatory is open to everyone in the Taishi Bureau at any time! In the future, this king also thought that the students of Guanshishan Academy and those who were interested in Chang'an City would also have the opportunity to use this telescope to take a good look at what the sky was like. ”

"That's great, many Taoist friends in Chang'an City should be quite interested in this astronomical telescope."

Li Kuan: ......