"Proxima Centauri is classified into the red dwarf star category in the classification of the sun. But if you want to understand red dwarf stars, you must start with the Hertz-Russell diagram." Chen Mengchuan smiled and hugged his daughter.
The little girl's knowledge level is already above all in the kindergarten, and she is eloquent. She plays with Ah Chen most of the time every day.
"Papa, what is a Hertz-Russian diagram? Is it a painting?" Chen Zhihui blinked with confusion on his face.
"Haha, baby, the HR diagram is a scatter diagram plotting the absolute magnitude or luminosity of the sun relative to the spectral type, or effective temperature. If you want to put it simply, the HR diagram plots each sun on a chart, and its temperature, color and light can be measured. Degree, and it has nothing to do with the position of each sun. The related color-magnitude diagram plots the apparent magnitude and color of the stars, which are usually drawn for star clusters where the sun is at the same distance." Chen Mengchuan said to his daughter patiently.
The little girl obviously didn't have enough vocabulary to understand these words. She frowned and pouted.
"Haha, when you grow up, you will know. Baby." Chen Mengchuan picked her up.
"Papa, you should say red dwarf, isn't it red?" the little girl asked again.
"Okay, then Dad will tell you. Red dwarfs, in fact, are often the planets we see at night. Because they are too far away from us, and the sun is very close to us, red dwarfs look small and the sun looks big. There are more red dwarfs among the suns. The diameter, size and weight of most red dwarfs are less than one-third of the sun. In other words, most red dwarfs are smaller than the sun."
"The surface temperature of these red dwarfs is also lower than our sun, and the light they emit is much weaker than the sun. Sometimes the brightness of many red dwarfs is only one ten thousandth of the brightness of the sun. They look like dimmed fireflies. Remember the video I showed you of fireflies?"
"Remember."
"Well, this is because the hydrogen nuclear fusion speed inside these red dwarf stars is slow. However, their slow nuclear fusion speed also has advantages, that is, their lifespans will be longer."
"Many red dwarfs with a mass less than 0.35 solar masses will have sufficient convection, and the helium element will be evenly distributed inside the star without accumulating in the core. In this case, the red dwarf will not expand into a red giant, but will gradually shrink until the hydrogen is exhausted."
"Papa, how long will they last?"
"Dad doesn't know how long they will shine, but if based on scientific reasoning, they will maintain stable luminosity and spectrum for hundreds of billions of years. However, due to the limited age of our current universe, no red dwarfs have developed to the later stages. Therefore, we have not observed the extinction of red dwarfs." Chen Mengchuan said with a smile.
He enjoyed the feeling of holding his daughter and telling her science stories. The little one is very curious and is interested in everything. I don't know when she has learned a lot about astronomy. Most of the time, Ah Chen tells her, and sometimes Chen Mengchuan or Zhao Wanyu tells her astronomical stories.
"Brother Chuan, we are going over." Zhao Wanyu walked in with a smile.
"Mom!" Chen Zhihui struggled and jumped down, rushing towards Zhao Wanyu.
Zhao Wanyu smiled and squatted down, hugged her, and the mother and daughter kissed each other.
"Baby, be good. Mom and dad have to go to work. Can you play with Ah Chen?" Zhao Wanyu asked with a smile.
"No. I want to play with my mother." The little girl said firmly.
"Mom, can you please ask Ah Chen to show cartoons to the baby?"
"Okay! Long live mom, long live Achen."
After a few minutes.
"I always show her cartoons. Aren't you worried about her becoming short-sighted in the future?" Chen Mengchuan complained.
"The intelligent soft light system of the graphene gravity screen can prevent myopia." Zhao Wanyu said with a smile.
Chen Mengchuan waved his hand helplessly. Zhao Wanyu is naturally much more familiar with Tenzhi Technology's various technological applications and technological products than he is, and he would not make fun of his daughter. It must be true.
It's true. People like me look at the screen every day and work much longer than before on Earth. However, it seems that eye drops are not used much anymore. When I was on Earth, I could get one bottle of eye drops a week.
"Have you made an appointment?" Chen Mengchuan asked her.
Zhao Wanyu's smile faded and he nodded calmly, with determination in his eyes.
"Then let's go." Chen Mengchuan said nothing more.
The two of them got on the gravity ball together and quickly flew towards the door to another dimension.
Today is a big day for Chen Mengchuan and others.
After a period of secret promotion, the entire United Nations finally understood what Tenzhi Technology wanted to do.
Push Earth Federation!
The nations of the earth unite!
This time, Tenzhi Technology will take the stage!
Because Tenzhi Technology already has enough power and enough popular support.
What Tenzhi Technology needs to do now is to gather all the resources of the entire earth and make a unified plan.
Further liberate more of the human population, release more educational power, and concentrate the power of the entire human race to face the future.
For Chen Mengchuan, this is the most important thing during this period, and it is also something that cannot be delayed.
After this time, Tenzhi Technology will strive for the greatest authority to coordinate the earth. No one, no country, no force can and will no longer be able to block Tenzhi Technology's coordination this time.
The gravity ball slowly landed on the square of the gate system of different dimensions.
Zhao Wanyu held Chen Mengchuan's hand and walked out of the gravity ball.
In the entire square, there were already many people walking around and on guard. This is a world-class gathering. Countless representatives of the world's top political powers gathered in the Martian city - Qiming City. Today, everyone will truly understand Tenzhi Technology, understand the culture of Tenzhi Technology, and understand the ultimate ambition of Tenzhi Technology, which is an integration of racial hatred, national hatred, and national hatred at the level of the entire human civilization.
All the countries on the earth will be integrated together today, and they will all enter a new human era today. They will all realize the highest social form that all countries are pursuing today.
Tenzhi Technology now has the right to speak, and Chen Mengchuan does not intend to continue to remain silent.
In the near future, in the interstellar civilization that is about to be realized, the earth must be monolithic!