The Helix Nebula: a Gaseous Envelope Expelled By a Dying Star
Iridescent Glory of Nearby Helix Nebula
Helix Nebula As Seen By Hubble and the Cerro Toledo Inter-American Observatory...
Close-Up of the Helix Nebula
Close-Up of the Helix Nebula
Close-Up of the Helix Nebula
Comet-like Filaments Along the Inner Rim of the Helix Nebula's Gas Ring...
Comet-Like Knots Around a Dying Star in the Helix Nebula
Close-Up of the Helix Nebula
Collision of Gases Near a Dying Star in the Helix Nebula