Foto de stock - The Helix Nebula, a planetary nebula also known as NGC 7293, seen in a composite of multiple exposures taken in the wavelengths of Helium II, Hydrogen Alpha, and O III.

Imagen: The Helix Nebula, a planetary nebula also known as NGC 7293, seen in a composite of multiple exposures taken in the wavelengths of Helium II, Hydrogen Alpha.

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