First of all, the universe is the unity of space, time, matter and energy, and it is not too much to describe it with all beautiful adjectives. Buddhism believes that nothing is eternal. Similarly, the universe is finite, not infinite. Everything has its own cycle, a cycle. The beginning to end of the universe is a circle. This round has a beginning and an end, so its time and space are limited. Since the origin of human civilization, we have been looking for the mystery of the universe. There are rich ideas about the structure of the universe in ancient astronomy in China, and there was a saying in the Western Zhou Dynasty that "the sky is as round as a cover and the earth is like a chess game". Similarly, the ancient Egyptians believed that the earth was floating on water, and the ancient Greeks believed that there were pillars under the earth. I think the most special thing is the spread of Brahma in India. Everything in the world is a dream. When he woke up, everything was gone, and when he fell asleep again, the world started from scratch again. This is the wonder of reincarnation. With the progress of civilization and the development of science and technology, our understanding of the universe is slowly on the right track, which has been at least partially confirmed. Ptolemy put forward a complete geocentric theory in the 2nd century, and 1543 Copernicus put forward a scientific Heliocentrism. 1609 Kepler developed Heliocentrism, and Galileo proved its correctness from the perspective of facts.