"Interstellar gladiatorial arena, what kind of interstellar competition are you going to hold?" The Flying Prism Star Prophet was shocked: "Jiao, if there really is such a thing, how spectacular it is..."

Prism thought of the interstellar arena that he had learned from various sources, and it seemed that no matter what he thought about, it was a spectacular sight.

"Don't be presumptuous, you're not bad. I've known this news for a long time, but it's just a star field competition held by Arcturus. Hua Zhongyue hopes that Fei Yuexing will not look down on herself in this seemingly macroscopic scene.

"Arcturus, where is that?" Flying Ridge Star asked, although the first two words or even the first three words of this word were familiar to him as an astronomy enthusiast, but when they were combined, it was not clear what it meant.

"Others must have other people's names, but on the earth, no, it should be in your Huaxia, that's what it is called, because that's what you call that star." Hua Zhongyue patiently explained.

"Well... So why is this star field named after Arcturus? Nothing else? "Flying Prism is strange, he does know about Arcturus, but there is an extra "domain", so he accidentally understands it.

"Because, if there is no advanced civilization in a star field that can walk a light year away, it will be named after the largest star in that star field. Conversely, if there is a higher civilization in a star field that can travel a light year away, the star field is named after the recognized name of that civilization. If there is more than one high-level civilization in that star field that has walked out of a light-year distance, then let the high-level civilization with the best comprehensive strength in that star field call the shots in this regard, this is the galactic nomenclature engraved in my body. Hua Zhongyue said another secret.

Every late May, along the curve of a few stars on the handle of the Big Dipper, you can draw a large arc, and you can find a bright bright star with orange red color in the starry sky near the zenith... Arcturus. To the north of the Great Horn there are five small stars of second and third magnitude, arranged together with the Great Horn in the shape of a kite or sail.

Arcturus, Alpha in the constellation Murphyllus, is the brightest star in the constellation Pasture and the second brightest star in the night sky in the Northern Hemisphere, the first being Sirius. Ranked fourth in the day in terms of brightness, it is a zero-magnitude star, and it is also said to be a first-magnitude star.

Because the second and third bright stars are too biased to the south pole of the earth, they are the brightest stars for the vast majority of Chinese observers...... After Sirius disappears, Arcturus is the brightest star in the sky. The apparent magnitude is minus 0.04, the absolute magnitude is minus 0.24, it is about 36 light-years away from the Earth, has a diameter of 21 times that of the Sun, has twice the mass of the Sun, has a brightness of 215 times that of the Sun, and has an effective surface temperature of about 4,400 degrees Celsius. It is a type K2III orange superstar. The operating speed is 483 kilometers per second.

Arcturus has a special place in ancient astronomy, not only because it is the fourth brightest star in the whole day, but more importantly, because it is a sign of direction for the Big Dipper.

"Historical Records of Heavenly Officials" said: "The one who builds the faint is the spoon", "the one who constructs the dragon's horn", and "the one who has the big horn...... The straight dipper refers to the construction of the season", which clearly records the method of the ancients to determine the season with the dipper. It is not clear what direction the dipper is pointing into, but below the dipper, marked by the Great Horn and the Star Officer, its direction is much more specific. The dipper refers to the southward direction of the Great Horn Set, and its corresponding star officials are the Horn and Kang.

Therefore, the direction pointed by the dipper is not only marked by the big horn and seti, but also the horn and the two houses. Furthermore, the stars of the dou dipper introduced earlier...... Xuange, Zhaoyao and Terrier River are also on the extension line of the Big Dipper, and they all play a role in judging the season in different times or from different angles, so they were valued and concerned by the ancients.

Ancient documents not only have records of determining the season with the pointing of the Big Dipper, but also records of determining the season with the swagger of the eighth star of the Big Dipper.

"Huainan Zi Shi Ze Xun" said: "The moon of Meng Chun, swaggering; In the moon of mid-spring, swaggering; The moon of spring is swaggering. The moon of Mengxia, swaggering; The midsummer moon is swaggering; In the summer month, the swagger is not yet. The moon of Meng Qiu, swaggering and pointing to Shen; The moon of mid-autumn is swaggering; The moon of autumn is swaggering. The moon of Mengdong is swaggering; In the midwinter moon, swaggering fingers; In the winter month, swagger refers to ugliness. ”

Because Arcturus is particularly bright, it is often used as a sign to identify constellations and determine directions, such as the spring curve, the spring triangle and the spring diamond, which are the signs of the spring starry sky, and the main components of these three signs are arcturus.

"Actually, many advanced civilizations that can walk a light year away are not as outstanding as your earth in terms of top-notch weapon research. All I can say about this is ...... Strengths. "It seems that the moon in the flower no longer calls the earth a blue starfish as before, and I don't know when it has been called the earth.

"So the Earth belongs to the Arcturus Domain, but I didn't expect that the interstellar gladiatorial arena is actually located on the periphery of Proxima Centauri, which is really close enough to the Earth." Flying Star said faintly, not knowing what else he was thinking.

"No, no, Earth doesn't belong in Arcturus, you're mistaken." Hua Zhongyue heard Flying Prism say this, and hurriedly corrected it, it didn't want Flying Prism to go into a misunderstanding.

"Huh? Don't belong? Does it belong to the Aldebaran Star Domain? "Flying Prism is puzzled again, the aliens related to the Star Field Contest have all appeared on Earth, why don't they belong anymore?

"Although there is also the Aldebaran Domain, but it is in the other direction, don't be mistaken, the Earth does not belong to the Aldebaran Domain." Hua Zhongyue continued its correction.

"In this way, in the Aldebaran Star Field, Aldebaran is the largest in that Star Field." The news of Flying Ridge Star Pass Guò also has a little understanding of this.

Aldebaran, also known as Alpha Taurus, means "follower" and is the thirteenth brightest star of the day. The apparent magnitude is 0.85, which is an irregular variable star, which varies between 0.75 and 0.95. The absolute magnitude is minus zero magnitude, and its spectral and luminosmetric classification belongs to type K5III, which is orange, has a surface temperature of 4,000 degrees Celsius, and is 65 light-years away from Earth.

"Have I forgotten the Sirius Domain, Ingueson has lived there, and it should not be difficult to get out of a light year with the civilization there." Prism spoke out his speculation.

"Indeed, with the civilization of the Sirius Galaxy, it is indeed not difficult to get out of a light year, and if you just make such a guess, you will be greatly underestimating the Sirius Galaxy? Because the adults still maintain contact with the civilization of the Sirius system, it is enough to show that it is not easy there. As for the relationship between Lord Yin and Golly, I don't know. When Hua Zhongyue talked about the civilization of the Sirius Galaxy, he couldn't help but talk eloquently. R405