Stellar Nebula

A stellar nebula is a large cloud of gas and dust in space, primarily composed of hydrogen and helium. These nebulae are cosmic nurseries where new stars are born, as gravity causes regions of the cloud to collapse and ignite nuclear fusion. They often appear colorful and luminous due to the ionization of gases by nearby stars, emitting light that we can observe from Earth. Stellar nebulae play a crucial role in the lifecycle of stars, providing the raw materials for their formation and evolution within galaxies.