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The Helix Nebula (also known as NGC 7293 or Caldwell 63) is a planetary nebula (PN) located in the constellation Aquarius. Discovered by Karl Ludwig Harding , most likely before 1824, this object is one of the closest of all the bright planetary nebulae to Earth. [ 3 ]
English: The Helix Nebula: a Gaseous Envelope Expelled By a Dying Star About the Object. Object Name: Helix Nebula, NGC 7293 or "The Eye of God"
Jewel Bug Nebula: NGC 7027: 1878 3.0 (approx.) 10 Cygnus: Helix Nebula: NGC 7293: 1824 0.68 +0.15 −0.08: 7.6 Aquarius: Little Dumbbell Nebula: M76: NGC 650, NGC 651: 1780 3.4 (approx.) 10.1 Perseus: Owl Nebula: M97: NGC 3587: 1781 2.6 (approx.) 9.9 Ursa Major: Twin Jet Nebula or Butterfly Nebula M2-9: 1947 2.1 14.7 Ophiuchus: NGC 7026: 1873 5 ...
Cometary knots in the Helix Nebula. Cometary knots, also referred as globules, are structures observed in several nearby planetary nebulae (PNe), including the Helix Nebula (NGC 7293), the Ring Nebula (NGC 6720), the Dumbbell Nebula (NGC 6853), the Eskimo Nebula (NGC 2392), and the Retina Nebula (IC 4406).
NGC 604, one of largest nebulae (H II region) is located in the Triangulum Galaxy (viewed by the Hubble Space Telescope).. Below is a list of the largest known nebulae so far discovered, ordered by actual diameter.
The Double Helix Nebula is a gaseous nebula in the direction of the constellation Ophiuchus, near the center of our galaxy.It is thought to have been distorted by magnetic torsion into the shape of two connected spirals, known as a double helix, which is akin to the shape of a DNA molecule.
NGC 2685 (also known as the Helix Galaxy) is a lenticular and polar ring Seyfert Type 2 galaxy in the constellation Ursa Major. Its velocity with respect to the cosmic microwave background is 1003 ± 9 km/s, which corresponds to a Hubble distance of 48.2 ± 3.4 Mly (14.79 ± 1.05 Mpc ). [ 1 ]
Nebulae around the massive B-type stars BD+60° 2668 and ALS 19653, [87] an obscured shell around the Wolf-Rayet star WR 35 [88] and a halo around the Helix Nebula, a planetary nebula [89] were also discovered with WISE.