The Helix Nebula Caldwell 63 is a planetary nebula located in the constellation Aquarius. Discovered by Karl Ludwig Harding, probably before 1824, this object is one of the closest to the Earth of all the bright planetary nebulae. The distance is 655±13 light-years. The Helix Nebula has sometimes been referred to as the „Eye of God“ in pop culture, as well as the „Eye of Sauron“.
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