The Helix Nebula: A Stunning Planetary Nebula in Deep Space #1473684 (License: Personal Use)

This image displays the Helix Nebula (NGC 7293), one of the closest planetary nebulae to Earth at approximately 650 light-years away. Its distinctive eye-like appearance stems from concentric rings of ionized oxygen (blue), hydrogen (red), and nitrogen (green-orange), illuminated by the hot white dwarf at its core. The structure offers astronomers critical insights into the late-stage evolution of Sun-like stars.

Used on astronomy educational sites, space agency galleries (e.g., NASA/ESA), and science blogs to illustrate stellar death, nebular formation, and telescope imaging capabilities; matches user intent for learning about cosmic phenomena or sourcing high-quality space imagery.