The "Local Bubble" is a region of space in our galaxy, the Milky Way, that is relatively empty of interstellar matter. It is surrounded by denser areas filled with gas and dust, which makes it unique. This bubble is about 300 light-years in diameter and is thought to have formed due to supernova explosions that cleared out the surrounding material. Within the Local Bubble, there are several nearby star systems, including Proxima Centauri and Sirius. The bubble's low density allows for easier observation of distant stars and galaxies. Understanding the Local Bubble helps astronomers learn more about the structure and evolution of our galaxy.