Changes

===Nebula Structure===

===Nebula Structure===

[[Image:M42proplyds.jpg|thumb|left|Image of several proplyds within the Orion Nebula by Hubble]]

[[Image:M42proplyds.jpg|thumb|left|Image of several proplyds within the Orion Nebula by Hubble]]

Various features in the Orion Nebula have been given their own names by observers over the years. The dark lane that extends from the north toward the bright region is called the "Fish's Mouth", it is here where a cluster of newborn stars are found called ''the Trapezium Cluster''. The illuminated regions to both sides are known as the "Wings". Other features include "The Sword", "The Thrust" and "The Sail".

Various features in the Orion Nebula have been given their own names by observers over the years. The dark lane that extends from the north toward the bright region is called the "Fish's Mouth", it is here where a cluster of newborn stars are found called ''the Trapezium Cluster''. The illuminated regions to both sides are known as the "Wings". Other features include "The Sword", "The Thrust" and "The Sail".

The Orion Nebula is the primary example of a stellar nursery where new stars are being born. Recent observations of the nebula have revealed approximately 700 stars in various stages of formation within the nebula.  In addition the Hubble have found over 150 proplys, or [[protoplanetary disk|protoplanetary disks]] in the nebula<ref>http://adsabs.harvard.edu/abs/1996AJ....111.1977M</ref>.  Such systems are considered to be the earliest stages of solar system formation.  The large number located just in this one nebula is viewed as evidence that the formation of star systems is a common occurrence in the universe.

The Orion Nebula is the primary example of a stellar nursery where new stars are being born. Recent observations of the nebula have revealed approximately 700 stars in various stages of formation within the nebula.  In addition the Hubble have found over 150 proplys, or [[protoplanetary disk|protoplanetary disks]] in the nebula<ref>http://adsabs.harvard.edu/abs/1996AJ....111.1977M</ref>.  Such systems are considered to be the earliest stages of solar system formation.  The large number located just in this one nebula is viewed as evidence that the formation of star systems is a common occurrence in the universe.<br /><br /><br /><br />

[[Category:Astronomy]]

[[Category:Astronomy]]