What type of nebula is identified with the Helix Nebula?

The Helix Nebula is classified as a planetary nebula. This designation comes from its formation process and characteristics. Planetary nebulae are created when a medium-sized star exhausts its nuclear fuel and ejects its outer layers into space. The remaining core, which is very hot, emits ultraviolet radiation that ionizes the ejected material, causing it to glow and form intricate structures.

The Helix Nebula specifically represents one of the closest examples of a planetary nebula to Earth, showcasing beautiful and complex features such as rings and filaments. Its distinct appearance has often led to it being compared to the shape of a helix, hence its name. In terms of stellar evolution, the final phases of a star's life cycle leading to a planetary nebula phase mark an important transition from a red giant to a white dwarf.

This correct classification helps astronomers understand the processes involved in stellar evolution and the chemical enrichment of the interstellar medium.