NGC 7635 Bubble Nebula

Figure 1. The Bubble Nebula (NGC 7635)

NGC 7635, known as the Bubble Nebula, is an emission nebula in the constellation Cassiopeia. It formed when the strong stellar wind from a hot, massive young star pushed into the surrounding cloud of gas and dust. This interaction created a bright bubble-shaped shell that stands out well in deep-sky astrophotography.