"Aliens, yes!" Liu Qingqing said reluctantly, "This must involve a lot of astronomy and physics knowledge. For example, the ------ spaceship had to reach a certain speed before it could sail out of the Blue Star. ”

"Oh? Why? ”

Gu Xiaomo said: "Mom, you are stupid! The earth has gravity, otherwise the apple will not fall to the ground, but fly to the sky, and your weight of one hundred and thirty pounds will float! ”

Liu Qingqing silently watched Gu Xiaomo as a demon, feeling that Gu Xiaomo was going to be beaten again, and sure enough, Gu Xiaomo hadn't finished speaking, and he had already screamed.

Gu Mu pinched Gu Xiaomo's shoulder, and even pinched and twisted, 360 degrees.

I could feel the white eyes of Gu Mu, "You know, right?" Mom gives you money to go to school, you know, right? Tell me about it, what is the speed of our space station?! ”

"Mom! I'm not a astronaut major! ”

"You don't know! Koyanagi-sensei must know, right, Koyanagi-sensei! ”

"This ------" Liu Qingqing swallowed, searching for dry intestines, to be honest, she didn't know much about this knowledge, so she had to talk nonsense first, "Any interaction between objects with mass, this is called gravitation. In our Blue Star, we can call it gravity. Right, Mo. ”

Gu Xiaomo raised his eyebrows: Didn't you already say this just now?

Oh yes.

Gu Xiaomo scratched his head.

Liu Qingqing picks her nails.

Who knows what that number is!

Liu Qingqing is studying medicine, and his major is not right, so he can't say such a professional number!

Oops, I dug myself a pit and killed myself!

Liu Qingqing continued to look at him: "The blue star is a sphere, no matter what direction it flies around the sphere, it will have a horizontal component of velocity, and this speed will produce a 'centrifugal force', the greater the speed, the greater the centrifugal force. ”

"Oh? So how much? Gu Mu cast a suspicious look.

Liu Qingqing couldn't answer.

Suddenly, a childish voice said: "When the speed of the spacecraft reaches 7.8 km/s, it can fly around the orbit of the blue star, which is called the first cosmic velocity." ”

It's Long Qingbao!

Long Qingbao relieved Liu Qingqing.

"If it exceeds 11.2 km/s, it can get rid of the gravitational pull of the blue star and fly away from the blue star, which is called the second cosmic velocity."

The three of them looked at Long Qingbao in surprise, especially Gu Mu, whose eyes were about to fall out!

"Mr. Koyanagi! It's your brother! ”

"Ah, yes, yes." Liu Qingqing, hehe.

Long Qingbao continued: "When the speed exceeds 16.7 km/s, it can break free from the sun's gravity and fly out of the solar system, which is called the third cosmic velocity. ”

"Oh my God!" Gu Mu shouted: "I'm afraid I didn't see a prodigy!" ”

"It's okay." Liu Qingqing said modestly: "My younger brother often watches cartoons, probably from cartoons, and he used to tell my classmates what two-dimensional and three-dimensional things were, which surprised our classmates for a while." ”

My sister is a top student.

The younger brother is a child prodigy.

The valley mother was envious to death.

"Mr. Koyanagi, how did you educate your younger brother? Your mother is too good, isn't it? ”

How to educate? Liu Qingqing complained in her heart that her mother's education method was to leave it alone.

It's called teaching without teaching. Pengsheng hemp, not upright.

My mother's heart is big!

Liu Qingqing said with a humble heart: "It's okay, children have a good memory, and they can remember it after reading it once, and my younger brother may be more interested in this aspect." So, Aunt Gu, interest is the best teacher. Writing is Xiaomo's interest, through writing, consulting information, learning a lot of knowledge, that's also very good! ”

Gu Mu said in annoyance: "No, no, your trick is only useful for your younger brother, Xiaomo doesn't even know what cosmic speed is." ”

Gu Xiaomo resisted: "Of course I know, but I just didn't remember the number." ”

Gu Mu continued to pinch Gu Xiaomo's arm, as if she wanted to pinch off the flesh on Gu Xiaomo's arm piece by piece!

"Then why can't you remember? So why can't you remember? You're not as good as a child! ”

Gu Xiaomo ran to the east and west, and his miserable appearance was like a mouse under a cat's paw.

"Mom, I don't dare, I must remember the speed of the universe in the future, and strive to escape from the earth as soon as possible, escape from the solar system, and escape from the clutches of your mother!" Before he finished speaking, another scream "Ah! ”

Gu Xiaomo, even if you escape from the solar system, you can't escape the clutches of your mother.

Try to escape the galaxy? Gu Xiaomo's eyes glanced at it, and suddenly saw Long Qingbao holding his mobile phone in his hand, his eyes were facing the screen, his tender face was full of blue light shining on the screen, and his fingers were still swiping around the screen, and his technique was very skillful.

Gu Xiaomo hit the jackpot, "Oh! Mother! Mother! He cheats! ”

Gu Xiaomo's first thought was: Long Qingbao swiped his phone and swiped the answer, so Long Qingbao cheated!

Unexpectedly, Gu Mu beat even more fiercely: "How old is he, you really compare yourself with a child!" ”

Liu Qingqing's first thought: Long Qingbao is only a few years old, it is impossible to know words! Must be shaking y!

She snatched the mobile phone from Long Qingbao's hand, "Child, don't play with your mobile phone------- Aunt Gu, in fact, my brother is just more interested in that aspect, and he doesn't know anything else." ”

"Really?" Gu's mother was tired of beating her son, turned her head, and showed rare tenderness to other people's sons, "Little brother, tell Auntie, how much is one plus one?" ”

Gu Xiaomo's head was suddenly full of black lines.

Liu Qingqing was suddenly full of black lines.

Long Qingbao looked disdainful, "How much do you want one plus one to equal?" This is just an axiom widely used in mathematical logic, you think you can draw a straight line, but you can't draw a straight line on the blue star at all, because the blue star is round, but because the blue star is infinitely large in the eyes of the blue star people, so this arc blue star people can't see it with the naked eye, so you think it's straight, so you think one plus one equals two. ”

"Not only the Blue Star, the entire universe is round and has a curvature, of course, the Blue Star people can't see this curvature with the naked eye, and even all the Blue Star's scientific and technological equipment can't see it. Can you draw a straight line? ”

Now Gu Mu is full of black lines: "But one apple plus one apple is equal to two apples." ”

Long Qingbao's calm demeanor was beyond his superficial age, "Of course, if you don't steal food." ”

At this moment, Liu Qingqing also wanted to hit someone, but he still restrained himself in front of Gu Mu and scolded: "Qingbao, don't be rude!" ”

Long Qingbao pursed his lips and stopped talking.

Gu Mu was surprised and distressed, "Ah, Mr. Xiaoyanagi, your brother is really amazing!" However, for the college entrance examination, I think it is better to add one plus one equals two. ”

Long Qingbao: "In this way, the knowledge points of the college entrance examination are too low, and they are useless for understanding the universe, so it is okay not to take the test." ”

A mouthful of blood in Gu Mu's throat almost gushed out, and she forced a smile, "Little brother, you are really a good cow, you are a prodigy, can you recite poems." Recite one to me? ”

Gu Mu probably thought that she could hear a song "Bright Moonlight in front of the bed", or "The sound of wind and rain at night", "Goose goose goose, song to the sky" and so on.

Unexpectedly, Long Qingbao opened his mouth and came:

"Your children are not your children,

-------

You are the bow, and your children are the arrows of life that come from the strings.

The archer sees the target in infinity, and fills you with the power of God.

He sent his arrows swift and far away.

------”

Gu Mu opened her mouth and stammered, "This can also be considered poetry?" ”

"Yes," Gu Xiaomo said, "modern poetry! ”

"What's the difference between that and normal talking?"

"As long as you speak well, it's like singing, it's a poem." Liu Qingqing said, "This is Gibran's poem. I was indeed a little surprised in my heart how Long Qingbao could recite this poem.

Well, now, Liu Qingqing thought sadly: Qingbao and I are both arrows shot from afar by my mother's bow, and there is no turning back!