What do Lagerstroemia Star and Taiyin Star mean from a scientific point of view?

Purple MSI is the Polaris, which refers to the star closest to the north celestial pole and the main star of Ursa minor. Official name: Alpha Ursa minor, which was called dog Chen Yi by the ancients in China. Because the earth rotates and Polaris is on the axis of celestial rotation, it is still relative to other stars. Around it, the most famous is the Big Dipper, around its four seasons.

Polaris is about 433 light years away from the earth, and consists of three celestial bodies: Polaris Aa, Polaris B and Polaris Ab. The main star Polaris A is a huge, bright and yellow Supergiant star with a diameter of about 52 million kilometers, which is 37 times the diameter of the sun and 4.5 times the mass. If placed with the sun, its brightness is 65,438+0,260 times that of the sun.

The moon star is the moon. The sun is opposite to the moon, and the sun is called the sun, so the moon is called the lunar month. In China, people also regard the moon star as Chang 'e.