👉 A subgyre, also known as a subgalactic disk, is a large-scale structure of gas and dust that lies in the center of our galaxy. It forms when gas from the central region of the galaxy expands outwards, causing the surrounding gas to cool and condense into smaller particles. The subgolds are thought to be remnants of the formation of the Milky Way galaxy billions of years ago, and they have been observed by astronomers for thousands of years.