Why do "three suns" appear in the sky? who can explain

The phenomenon of "three suns" proves that there is a sky cover above the earth.

The Sun is a star located in the center of the solar system. It is almost a mixture of hot plasma and magnetic fields. An ideal sphere

The diameter of the sun is about 1,392,000 kilometers, and its mass is about 2×10? kg, accounting for 99.86% of the total mass of the solar system, of which about three-quarters is hydrogen, and almost the rest They are all helium.

In the vast universe, the sun is just a very ordinary star. The solar wind it creates extends to the top of the heliosphere 100 astronomical units away. This "bubble" formed by the solar wind is called. The heliosphere is the largest continuous structure in the solar system. The sun or sun is the star at the center of the solar system. It is almost an ideal sphere of hot plasma and magnetic fields.

Its diameter is approximately 1,392,000 (1.392). ×10^6) kilometers, which is equivalent to 109 times the diameter of the Earth. Its mass is about 2×10?kg (330,000 times that of the Earth), accounting for about 99.86% of the total mass of the solar system. From the perspective of chemical composition, it is about four times the mass of the sun. Three-thirds is hydrogen, and the rest is almost helium, including oxygen, carbon, neon, iron and other heavy elements with less than 2% mass.