Star Cluster: Difference between revisions

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== Orion Nebula/Trapezium/NGC 1981 ==

[[File:Orion Nebula.png|thumb|188x188px|ORION NEBULA]]

The '''Orion Nebula''' (also known as Messier 42, M42, or NGC 1976) is a diffuse nebula situated in the Milky

The '''Orion Nebula''' (also known as Messier 42, M42, or NGC 1976) is a diffuse nebula situated in the Milky Way. It is one of the brightest nebulae and is visible to the naked eye in the night sky. The M42 nebula is estimated to be 24 light years across. It is one of the most scrutinized and photographed objects in the night sky and is among the most intensely studied celestial features. The Orion Nebula contains a very young open cluster, known as the '''Trapezium''' due to the asterism (any pattern of stars recognized in the Earth's night sky) of its primary four stars.

Way. It is one of the brightest nebulae and is visible to the naked eye in the night sky. The M42 nebula is estimated to be 24 light years across. It is one of the most scrutinized and photographed objects in the night sky and is among the most intensely studied celestial features. The Orion Nebula contains a very young open cluster, known as the '''Trapezium''' due to the asterism (any pattern of stars recognized in the Earth's night sky) of its primary four stars.

The '''Trapezium''' or Orion Trapezium Cluster, also known by its Bayer designation of Theta1 Orionis, is a tight open cluster of stars in the heart of the Orion Nebula, in the constellation of Orion. It is a relatively young cluster that has formed directly out of the parent nebula and may be a sub-component of the larger Orion Nebula Cluster.

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 == Orion Nebula/Trapezium/NGC 1981 ==
 [[File:Orion Nebula.png|thumb|188x188px|ORION NEBULA]]
-The '''Orion Nebula''' (also known as Messier 42, M42, or NGC 1976) is a diffuse nebula situated in the Milky
+The '''Orion Nebula''' (also known as Messier 42, M42, or NGC 1976) is a diffuse nebula situated in the Milky Way. It is one of the brightest nebulae and is visible to the naked eye in the night sky.  The M42 nebula is estimated to be 24 light years across.  It is one of the most scrutinized and photographed objects in the night sky and is among the most intensely studied celestial features.  The Orion Nebula contains a very young open cluster, known as the '''Trapezium''' due to the asterism (any pattern of stars recognized in the Earth's night sky) of its primary four stars.
-Way. It is one of the brightest nebulae and is visible to the naked eye in the night sky.  The M42 nebula is estimated to be 24 light years across.  It is one of the most scrutinized and photographed objects in the night sky and is among the most intensely studied celestial features.  The Orion Nebula contains a very young open cluster, known as the '''Trapezium''' due to the asterism (any pattern of stars recognized in the Earth's night sky) of its primary four stars.
 The '''Trapezium''' or Orion Trapezium Cluster, also known by its Bayer designation of Theta1 Orionis, is a tight open cluster of stars in the heart of the Orion Nebula, in the constellation of Orion.  It is a relatively young cluster that has formed directly out of the parent nebula and may be a sub-component of the larger Orion Nebula Cluster.

Star Cluster: Difference between revisions

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