If the sun burns out, the earth will fall into darkness. How do humans survive?

If the sun burns out and the earth is dark, then human beings can't survive.

It is understandable for everyone to say so. Each of us needs the sun, and the sun is very important. We all know that trees convert carbon dioxide into oxygen through photosynthesis, and then provide it for human use. If there is no sunlight, trees can't carry out photosynthesis, so carbon dioxide can't be converted into oxygen. How can human beings survive without oxygen?

Without oxygen, human beings will die, so I said that without the sun, human beings can't survive.

Moreover, the sun can kill bacteria. In winter, we will go to bask in the quilt. Think about it. If you don't visit bask in the quilt for a long time, the quilt will be covered with mites. Moreover, the sun also provides us with warmth, and bathing in the sun is a good thing. Without the sun, when the world is dark, I dare not even think about it.

But I feel that it is impossible for the sun to burn out, so enjoy the moment.