Talk about the Milky Way

The Milky Way refers to a milky white bright belt across the starry sky. In ancient China, it was also called Tianhe, Yinhan, Xinghe, Xinghan, and Yunhan. In ancient Europe, it was called γαλαξ?α? "Milk Road" in ancient Greece. .

The Milky Way intersects the celestial equator in the constellation Aquila, in the northern hemisphere. The Milky Way outlines a band of varying widths on the celestial sphere, called the galactic belt. Its widest point reaches 30°, and its narrowest point is only 4° to 5°, with an average of about 20°. This is only a part of the Milky Way.

The Milky Way occupies a very important position in Chinese culture. There are famous Chinese myths and legends about the meeting of magpie bridges.

The Milky Way is only visible on clear nights and is caused by the light of countless dark stars (stars). The Milky Way is not the Milky Way, but a part of the Milky Way. The Milky Way contains hundreds of billions of stars, with a total mass of about 600 billion to 300 billion times the mass of the sun, and a diameter of about 100,000 light-years.