The Cosmos with NGC 7293
The Helix Nebula (NGC 7293) is a large planetary nebula in the constellation Aquarius. The thirty-eight 10-minute exposures that the photographer combined to make this image were taken over three nights. The Helix Nebula, also known as NGC 7293, is a planetary nebula (PN) 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, measured by the Gaia mission, is 655±13 light-years. It is similar in appearance to the Cat’s Eye Nebula and the Ring Nebula, whose size, age, and physical characteristics are similar to the Dumbbell Nebula, varying only in its relative proximity and the appearance from the equatorial viewing angle. The Helix Nebula has sometimes been referred to as the “Eye of God” in pop culture, as well as the “Eye of Sauron“. Distance 650 ly away.