The sisters were a little confused by Ye Xuan's words. They all looked at Ye Xuan in bewilderment. It took a while for them to react and ask in surprise,
"Little Brother, how do you know so much about the stars?"
"That's right, Little Brother. You even know about the companion star of Sirius and the distance between them. Did you learn it before?"
"I'm dumbfounded. This is the first time I've heard so much about the stars. I've never heard of them before."
"Me too. I just understood it."
Ye Xuan smiled and showed a proud expression.
"I usually watch videos about this. I remember most of the stars in the sky."
"Really?! Little Brother, come over here and help me see what this star is. It's so beautiful! "
Sister Five and Ye Fei showed a pleasantly surprised expression when they heard Ye Xuan's words. She held the telescope in one hand and waved at Ye Xuan with the other, looking impatient.
The other sisters were the same. When they heard Ye Xuan's words, they began to rub their palms together, waiting for Ye Xuan to explain it to them.
Ye Xuan did not mind. He walked up to the telescope leisurely and let Sister Five and Ye Fei carry him. He looked through the telescope and saw a beautiful star.
After taking a few glances, Ye Xuan jumped down and explained to Sister Five and Ye Fei, "This star is called Seneca.
It's Alpha Carinae. It's about 310 light-years away from the solar system. Its apparent magnitude is -0.72, and its absolute magnitude is -5.53... I won't talk about these numbers. "
"This Seneca's brightness is second only to Sirius among the stars. It's the second brightest star in the sky."
"It's in the south. Every year, on the night of the second lunar month, after finding Sirius in the south, you can look down and find it above the horizon."
"Theoretically, anyone south of 37 degrees north latitude has a chance to see it. The only difference is the length of time you see it. But considering the fog on the ground, vision obstruction, and other factors, the "real" sighting of Seneca is much further south than 37 degrees north latitude. “
"Old Man Star was a lucky star in the eyes of the ancients. In the East, he was known as the Immortal of the South Pole. There is also the saying of the God of Longevity, but it doesn't mean that it is the master's lifespan. "
When Sister Five Ye Fei heard this, she revealed a "wow" expression. She raised her head and looked at the shining star in the night sky with her red eyes. She clasped her hands together in front of her chest as if she was praying.
The eyes of the other sisters also lit up as they raised their heads to look at the birthday star with smiles on their faces.
Then, they also scrambled to grab the telescope. Then, they carried Ye Xuan and placed him in front of the telescope, letting Ye Xuan explain it to them impatiently.
"That star is called Alpha Centauri, which is Alpha Centauri. It's located in the Centauri constellation and is a triple star system. It's the closest star system to the sun."
"The total apparent magnitude of Alpha Centauri is about -0.27, and it is customary to regard it as the third brightest star in the sky. Alpha Centauri is also famous for being the outermost guide of the Southern Cross constellation. Alpha Centauri is usually regarded as a member of this star system. It is only 4.24 light years away from the sun and is the closest star to the sun. "
"This star is called Arcturus, also known as the Heavenly East Star. It can also be called the Eastern Star. It is regarded as the imperial court of the Heavenly Kings. "
"Arcturus is Alpha Centauri, the brightest star in the constellation. It is also the brightest star in the northern sky. Sirius and Seneca are the stars in the southern sky."
"Every late May, extend along the curve of the Big Dipper's handle and draw a large arc. Then, in the sky near the zenith, you will find an orange-red, dazzling star called Arcturus. North of Arcturus, there are five small stars of second and third magnitude. They are arranged together with Arcturus in the shape of a kite or sail. "
"Next is the constellation that you are all very interested in. That's right, it is Vega. I have to say that Fourth Sister's eye for stars is very accurate. You still found Vega."
"Vega, also known as Vega or Alpha Lyrae, is the brightest star in the constellation Lyrae. It is about 25 light years away from the earth. It is an oblate spherical star. The north pole is light pink, and the equator is bluish-white. Look, it is a beautiful name. It is both Vega and Lyrae, and the color is very beautiful. "
"Vega is the fifth brightest star in the night sky. It is the second brightest star in the northern hemisphere, second only to Arcturus. Like Arcturus and Sirius, it is one of the brightest stars near the sun. "
"Okay, finally, Eldest Sister's star is very interesting. This star is called Epsilon, Alpha Centauri. It is the brightest star in the constellation Auriga and the sixth brightest star in the sky. It is only second to Sirius, Arcturus, and Vega. It is the fourth brightest star in the northern sky."
"Its English name is derived from Latin. It originally meant little goat. The Bayer nomenclature designates it as Alpha Centauri, Alpha Centauri, Alpha Centauri, or Centauri. "
"Although it looks like a star to the naked eye, it is actually a star system. It is made up of four stars in two pairs. It is very interesting."
"The two stars in the first pair are large and bright. They are G-type giants. The diameter of each star is 10 times that of the sun. The mass of each star is 2.5 times that of the sun. They orbit each other in very close orbits."
"These two stars are called Epsilon AA and Epsilon AB. In the future, they will gradually cool and expand, evolving into red giants."
"The second pair is about 10,000 astronomical units away from the first pair. Both stars are dim, low-mass, and relatively low-temperature red dwarfs."
"Their names are Gocharierh and Gocharierl respectively, and from c to g and i to k are other stars in the same field of vision, but they are actually unrelated. Epsilon's system is relatively close to the earth, only 42.2 light years away. "
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