Why is the sun a star? Why does it light up?

The sun is a star. It is the nearest star in the universe. Like all stars, the sun is a glowing gas ball. Air jets called protrusions often shoot out from the sun. Dark bands on the surface of the sun, called sunspots, are common on the sun. Sunspots are much colder than other hot surfaces of the sun. Don't look directly at the sun, too much sunlight will damage your eyes. The hottest part of the sun is the core of the sun, and its surface is called the photosphere.

The biggest protrusion looks like a huge arch. They can last for hours or days. The core is the center of a star or planet. An orbit is the path of a planet around the sun. The path of a satellite around a planet is also called an orbit. Around the sun is a gas cloud called the corona. Astronomers can see these clouds during the eclipse, when the moon will cover the sun.

The sun revolves around the center of the Milky Way with a period of about 250 million years. The light and heat of the sun are stars. There are many kinds of stars, the sun is one of them. The sun is a kind of star. Stars are composed of non-solid, liquid and gaseous plasmas. They are spherical or ellipsoidal and can emit light by themselves. The sun fits this definition perfectly. The Big Dipper in Ursa Major, the North Star in Ursa Minor, and some stars in Empress Fairy are all stars. You may be surprised, but the Big Dipper is bigger than the sun. As for why people see a straight line on the earth, why the position changes and the earth revolves. The "W" of Cassiopeia is far away from the Big Dipper, so when Cassiopeia reaches its zenith in autumn, the Big Dipper is at its lowest point in the sky, and it can't even be seen in the south of China.

Bian Xiao made a detailed interpretation of this issue, hoping to help everyone. You can leave me a message in the comments section if you have any questions. You can comment with me more. If there is anything wrong, you can also interact with me more. If you like the author, you can also follow me. Your praise is the greatest help to me. Thank you. .