- The spectacular planetary nebula Helix Nebula is the death of a star disguised as a butterfly.
- The dead centre of the exploded star, known as the Helix nebula, is pictured surrounded by rings of gases from the former star and nearby planets that appear to have survived its death throes.
- Some biological molecules have the form of a helix.
- Having a shape approximating that of a helix.
- Its remnants form the Crab Nebula.