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The following well-known nebulae are listed for the purpose of comparison. Orion Nebula: 20 ly (6.132 pc) [48] Diffuse Nebula: The closest major star formation region to Earth. [49] Crab Nebula: 11 ly (3.4 pc) [50] Supernova remnant: The remnant of a supernova that occurred in 1054 AD. [51] Bubble Nebula: 6 [52]-10 [53] [54] ly (1.84-3.066 pc ...
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] The distance, measured by the Gaia mission, is 655±13 light-years. [4]
The Owl Nebula (also known as Messier 97, M97 or NGC 3587) is a planetary nebula approximately 2,030 light years away in the constellation Ursa Major. [2] Estimated to be about 8,000 years old, [ 6 ] it is approximately circular in cross-section with a faint internal structure.
NGC 1535, also known as Cleopatra's Eye, [3] is a planetary nebula in the constellation of Eridanus, discovered by William Herschel on February 1, 1785. [4] It is very similar to the Eskimo Nebula in both color and structure but the central star can be quite difficult to observe visually. [ 5 ]
Oculudentavis is an extinct genus of lizard of uncertain taxonomic placement, [1] originally identified as an avialan dinosaur (bird, in the broad sense). [2] It contains two known species, O. khaungraae and O. naga.
Researchers unearthed the skull of a previously unknown starling-sized bird species named Navaornis hestiae that was so well preserved they were able to digitally reconstruct its brain and inner ...
NGC 6188, also known as the Firebird Nebula, is an emission nebula located about 4,000 light years away in the constellation Ara. The bright open cluster NGC 6193, visible to the naked eye, is responsible for a region of reflection nebulosity within NGC 6188. [1] [2] Astrophotography of the NGC6188 nebula in narrowband technique and Hubble ...
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