Four o'clock in the morning.

The history classroom was already crowded with people, and everyone was talking to each other, and people were noisy.

Since Interstellar detected that the moon had turned into a black hole, the eyes of the entire interstellar world have been on Yuxing High School.

In the eyes of all interstellar people, Yuxing High School is their vanguard.

Yuxing High School has the smartest professors in the entire interstellar world, and has the most advanced equipment in the entire interstellar world.

The interstellar government has full confidence in the ability of Royal Star High to solve this matter.

The various colleges of Yuxing High School have sent their proud students to the School of History to learn about the latest situation.

Professor Shangguan stood silently in the center of the classroom, and some kelp paper on the ground was printed with images of humans from various planets, lifelike in the light.

Who would have thought that these images have become forever.

The moon became a black hole and the Earth disappeared.

Thinking of this, Professor Shangguan couldn't help but feel a kind of sadness rising in his heart.

"Please be quiet." Luo Chuan shouted.

"Professor Shangguan has something to say." Nangong Tian said.

The whole classroom was quiet, the night outside the window was dark, only the sound of the wind echoed around.

Professor Shangguan cleared his throat, he bent down, picked up a piece of kelp paper from under his feet, and slowly read in his quiet voice, "The bright moonlight in front of the bed is suspected to be frost on the ground. His voice made a muddy sound, "This is a famous quote from a very famous poet on earth." ”

There was once a poem on earth that was very fitting for a moonlit night.

It only has a few words, but it writes the artistic conception of the wanderer's homesickness.

How many people, when they were adrift in other places, silently recited the second half of this poem when they were lonely: "Raise your head to look at the bright moon, bow your head and think of your hometown." ”

From now on, this poem will still exist, and this kind of verse related to moonlight may become a masterpiece.

Artificial suns, artificial moons, are very simple and universal for the core planet.

And they can no longer feel the feeling of real moonlight.

The moon has become a black hole, and they can no longer see the moon and no longer feel the poetry that the moonlight brings to them.

Everyone fell into a sense of nostalgia for the moonlight, and they stood quietly, listening to Professor Shangguan's voice echoing in the air.

"This is Li Bai's poem?" Teacher Panda said, and then, she approached Professor Shangguan and said, "Li Bai (February 8, 701 - December 762), the character is Taibai, the name is Qinglian Jushi, and the name is 'Qi Xianren'. He was a great romantic poet of the Tang Dynasty and was praised as a 'poet immortal' by later generations. ”

"It's a pity that our descendants can no longer appreciate the artistic conception that this great poet brought to us." Teacher Panda said sadly.

The white tiger rubbed his eyes, thought for a while, and said, "Isn't there an artificial moon in our submarine school headquarters?" ”

That's right, the artificial moon of the core planet is no different from the real moon in terms of brightness and duration.

"An artificial moon that rises once a week is no different from a real moon!"

That's right, an artificial moon is made by comparing the color spectrum, temperature, length of exposure, and shape of the moonlight.

It bears a 90% resemblance to the real moon.

Ever since the core planet's oceans turned slime and the skies became gloomy, the interstellar government decided to move the planetary high school underground.

After many arguments, scientists built a huge dome on the bottom of the sea, and under this huge and transparent dome, Yuxing High School began to take shape.

Faculty of Biology, Faculty of Law, Faculty of History......

The students and teachers were very happy with the new school, but within half a year, the students were all experiencing physical problems.

Later, after many studies by doctors, it was found that their bodies could not last without sunlight and moonlight.

So, they made artificial suns and artificial moons.

The artificial sun and moon are no different from the real sun and moon, but the impact on the human body cannot be measured by data.

For a core planet with a harsh environment, Earth is humanity's only hope.

And most of the animals and plants of the earth are inseparable from the sun and the moon.

Now there is no moon and the earth is completely swallowed up.

There is little hope for humanity.

"I said," Nangong Tian said with his hands on his hips, "You don't understand how much impact the moon will have on our interstellar planet when it turns into a black hole, I see you, so you should hurry home and make up for your physics class." ”

Ignorance is the most annoying level of knowledge.

Nangong Tian took a step forward, "Isn't the physics of the Biology Academy bad?" ”

"Do you want my brother to teach you by hand!" Nangong Tian looked at the white tiger playfully and said.

From the bottom of his heart, he doesn't like the White Tiger.

Not to mention the violent temper of the white tiger, which has already made him unhappy, even the ignorance of the moon and the earth just now is enough to make him feel disgusted.

You must know that when he Nangong Tian was on the Nameless Planet, he was a well-known little mathematician.

In the most well-known interstellar Olympiad in mathematics, Nangong Tian has won the first prize for six consecutive years.

The school newspaper of the Nameless High School once called him "a little mathematician who surpasses Gauss." ”

You must know that Gauss is a very powerful mathematician on earth, he is similar to Gauss, so it can be seen that Nangong Tian's mathematical talent has appeared.

Teachers like to say, "If you are good at math, you can't be bad at physics." ”

His Nangong Tian's physical level is no less than that of well-known physicists on the earth, such as Hawking and Newton.

Black holes, dark matter, dark energy...... These concepts, which seem difficult for others to understand, can be understood by just thinking about it.

Thinking of this, I felt that the white tiger was a little hateful, and he was not worthy of talking to a scholar like himself at all.

"Nangong Tian," the white tiger shouted, "What skills do you have to drag here?" ”

Looking at Nangong Tian's complacent appearance, the white tiger had a stomach full of anger.

"You newcomer!" The white tiger shouted.

"What's wrong with the new kid?" Nangong Tian replied.

"Aren't you also the defeated of our Royal Star High School?" The white tiger shouted, he patted Nangong Tian's thigh meaningfully, "Do you remember your ......legs?"

Nangong Tian's eyes were red, as if he was on fire, he hated it most in his life when others talked about his legs, if it weren't for the last track ball season, his legs wouldn't have become like this, thinking of this, he had an indescribable dislike for Yuxing High School, and he was also annoyed by the white tiger, the kid who exposed his scars naked, "You white tiger, what did you say?" He stepped forward and pulled the collar of the white tiger's school uniform, "Believe it or not, I'll abolish you now!" ”

"White Tiger," Suzaku shouted in a low voice.

The white tiger turned around and saw a figure walking towards him.