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The Orion Nebula (also known as Messier 42, M42, or NGC 1976) is a diffuse nebula in the Milky Way situated south of Orion's Belt in the constellation of Orion, [b] and is known as the middle "star" in the "sword" of Orion.
M42 or M-42 may refer to: . In science: . Messier 42, a nebula also called the Orion Nebula; the 42nd Mersenne prime, 2 25964951-1, discovered in 2005; an Y-chromosomal mutation, see Haplogroup B-M42
Orion's Sword contains the Orion Nebula, the Messier 43 nebula, the Running Man Nebula, and the stars Theta Orionis, Iota Orionis, and 42 Orionis. Head Three stars comprise a small triangle that marks the head.
Messier 43 or M43, also known as De Mairan's Nebula and NGC 1982, is a star-forming nebula with a prominent H II region in the equatorial constellation of Orion. It was discovered by the French scientist Jean-Jacques d'Ortous de Mairan some time before 1731, [ 3 ] then catalogued by Charles Messier in 1769.
42 Ori is the bright star at the centre of NGC 1977.. 42 Orionis, also known as c Orionis or c Ori, is a class B1V [3] (blue main-sequence) star in the constellation Orion.Its apparent magnitude is 4.59 [2] and it is approximately 900 light years away based on parallax.
Other stunning nebula images include the VISTA views of the Orion Nebula and the Lagoon Nebula. The picture on the right is a wide-field view of the Orion Nebula (Messier 42), lying about 1350 light-years from Earth, taken with the VISTA infrared survey telescope at ESO's Paranal Observatory in Chile.
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Enormous Lyα nebula (ELAN) Around the quasar UM287 at around z=2.3. Cosmic filament illuminated by the quasar. MAMMOTH-1: 1,441,000 ly (442,000 pc) [7] Enormous Lyα nebula (ELAN) The nebula is associated with the galaxy overdensity BOSS1441, [7] which is a protocluster at z=2.3. The nebula represents the circumgalactic medium. Its emission is ...