Bubble NebulaThe Bubble Nebula, also known as NGC 7635, is an emission nebula located in the constellation Cassiopeia.It is approximately 7,100 light-years away from Earth. The nebula gets its name from its distinctive bubble-like shape, which is created by the stellar winds from a massive central star,The Bubble Nebula is notable for its intricate structure, which includes a shell of ionized gas and a central cavity. The nebula is also a site of ongoing star formation, with new stars being born from the surrounding material