Why does the red star of Orion mysteriously dim? What is the reason behind it?

The effective temperature of the lowest brightness of Red Star Orion is 3476k K, but the effective temperature of brightness recovery on April 6, 2020 is 3646k K, and the change of effective temperature of 170k is enough to explain the mysterious dimming phenomenon of Red Star Orion. The researchers analyzed that this was caused by huge sunspots on the surface of Orion. It is a well-known phenomenon that there are sunspots on the surface of red giants. This sunspot is probably formed by convection or cold convection sources and widely exists on this planet.

1. What is Orion? Orion is one of the zodiac signs. It lies between Gemini, Giraffe, Canine, Taurus, Rabbit, Bao Qiang and Puppy. The north is locked by the Milky Way, and the brightest star is Su Zhen VII. The main body of the constellation is a quadrilateral composed of four bright stars, such as Su Zhen VII and Su Zhen VII, with latitudes varying at 85 and 75. Orion is the most dazzling constellation among the 88 constellations. Looking up on a cold winter night, it is not difficult to see muggles with zenith arranged in the south, ranging from 1 to 3. Around this belt of Orion, you can see four bright stars in roughly the same four directions: the hunter's shoulders and legs. If conditions are good, you can see Orion's head, knife, stick and shield, and you can also see the legendary Orion belt.

Is Orion located in the Milky Way? Orion is outside the solar system where humans live. Orion is composed of stars in several different galaxies, which is an area of the celestial sphere centered on the earth, but it seems to be together in the sky. The stars visible to the naked eye in Orion are all in the Milky Way, far away from each other. As we all know, the Milky Way currently has four huge spiral arms, namely Sagittarius spiral arm, Orion spiral arm, Perseus spiral arm and Cygnus spiral arm. Our solar system is located in the Orion spiral arm between the Centauri spiral arm and the Perseus spiral arm, about 26,000 light years away from the center of the Milky Way.

To sum up, the stars that make up Orion are basically members of the Milky Way. Orion Nebula M42 is located on the forearm of Orion 3354, one of the galaxies, about 1500 light years away from the solar system, and is the birthplace of the nearest star in the galaxy.