The last book to take shape is the seen -unseen concepts, which are not seen in the books of the universe. Most of the essays written in the book are based on my understanding and the theories are based on special analysis. Assuming the truth of will be realized. If four or five people are asked about how the sun in the sky was born or how the light is moving in the sky, then the answers of everyone will probably be inconsistent. I have written the article in this book with such a conviction in mind. I'm not sure if this is a good idea, but it's a good idea. Second, some of the words in the book are repeated over and over again. This is because of the fact that there is a situation where one has to go to great lengths to describe the articles. Just as an elephant's trunk can be inferred to be an elephant, so it can be inferred from some of the factors of the earth, the atmosphere, the sun, and so on. Estimates are often correct. This is exactly what is written in the book. Also, let's read some important and unknown things about space in the book.