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Planetary Nebulae are shells of gas thrown off by stars at the end of their lives. The resulting shell is excited to illumination by intense radiation from the star of origin.

M97 - The "Owl Nebula" in Ursa Major

M97 - The "Owl Nebula" in Ursa Major

Abell 31 in Cancer

Abell 31 in Cancer

Jones-Emberson 1 (PK164+31.1) in Lynx

Jones-Emberson 1 (PK164+31.1) in Lynx

NGC 246 - "Skull Nebula" in Cetus

NGC 246 - "Skull Nebula" in Cetus

NGC 7293 - The Helix Nebula in Aquarius

NGC 7293 - The Helix Nebula in Aquarius

M27 - "Dumbell Nebula" in Vulpecula

M27 - "Dumbell Nebula" in Vulpecula

M27 - "Dumbell Nebula" in Vulpecula - Closeup View

M27 - "Dumbell Nebula" in Vulpecula - Closeup View

NGC 7008 "Fetus Nebula" in Cygnus

NGC 7008 "Fetus Nebula" in Cygnus

NGC 7008 "Fetus Nebula" in Cygnus - Closeup View

NGC 7008 "Fetus Nebula" in Cygnus - Closeup View

Abell 39 in Hercules

Abell 39 in Hercules

M57 in Lyra

M57 in Lyra

M76 in Perseus

M76 in Perseus

NGC 7048 in Cygnus

NGC 7048 in Cygnus

NGC 7048 in Cygnus Closeup View

NGC 7048 in Cygnus Closeup View

NGC 6781 in Aquila

NGC 6781 in Aquila

NGC 6781 Closeup View

NGC 6781 Closeup View

NGC 6543 "Cat's Eye" Nebula in Draco

NGC 6543 "Cat's Eye" Nebula in Draco

NGC 6543 Closeup View

NGC 6543 Closeup View

M57 in Lyra Widefield View

M57 in Lyra Widefield View