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Ghost of Jupiter: NGC 3242: 1785 4.8 8.6 Hydra: Blinking Planetary: NGC 6826: Caldwell 15 2.0 8.8 ... Box Nebula NGC 6445: 1786 4.5 11.2 Sagittarius: Eye of Sauron Nebula
Planetary nebulae are observed in more distant galaxies, yielding useful information about their chemical abundances. Starting from the 1990s, Hubble Space Telescope images revealed that many planetary nebulae have extremely complex and varied morphologies. About one-fifth are roughly spherical, but the majority are not spherically symmetric.
The Ring Nebula is located in the lower right of the image Gum Nebula: 809–950 ly (248–291 pc) [32] [33] Emission nebula: Extends about 36° of the sky Bubble Nebula (NGC 6822) 758 ly (232 pc) [34] [35] [36] H II region: The Bubble Nebula is located in the upper left of the image NGC 6188: 600 ly (180 pc) [37] Emission nebula: NGC 592
The following articles contain lists of nebulae: List of dark nebulae; List of diffuse nebulae; List of largest nebulae; List of planetary nebulae;
A nebula that is visible to the human eye from Earth would appear larger, but no brighter, from close by. [6] The Orion Nebula, the brightest nebula in the sky and occupying an area twice the angular diameter of the full Moon, can be viewed with the naked eye but was missed by early astronomers. [7]
Comet Lovejoy and Jupiter, a giant gas planet; The Sun; Sirius A with Sirius B, a white dwarf; the Crab Nebula, a remnant supernova; A black hole (artist concept); Vela Pulsar, a rotating neutron star; M80, a globular cluster, and the Pleiades, an open star cluster; The Whirlpool galaxy and Abell 2744, a galaxy cluster; Superclusters, galactic ...
The closest in the past 1,000 years was in 1761, when Mars and Jupiter appeared to the naked eye as a single bright object, according to Giorgini. Looking ahead, the year 2348 will be almost as close.
It is also the brightest patch of nebulosity in the sky. [12] [13] [14] Small Magellanic Cloud (NGC 292) 2.7 200 kly (61 kpc) Tucana: Visible only from the southern hemisphere. [12] [15] Andromeda Galaxy (M31, NGC 224) 3.4 2.5 Mly (770 kpc) Andromeda: Once called the Great Andromeda Nebula, it is situated in the Andromeda constellation. [12] [16]