“….. an unformed fiery mist, the chaotic material of future suns.” William Herschel
The Orion Nebula is one of the brightest nebulae in the sky, and one of the nearest star-forming regions to Earth.
M42 is 1,350 light years from Earth, and estimated to be 24 light years across.
M 42 is the closest region of massive star formation to Earth. The youngest and brightest stars are less than 100,000 years old. The ultraviolet light of these hot stars causes the nebula to glow by fluorescence.
Orion Nebula contains about 700 stars in various stages of formation. Many of the faint stars are so young that they are still radiating energy from gravitational contraction, and have not yet settled down as stable main sequence stars.
Stellar winds emitted by newly formed stars create shock waves when they encounter gas in the nebula, triggering additional star formation. Eventually, most of the Orion Nebula's gas and dust will be ejected. The remaining stars will form an open cluster, which will gradually disperse under the gravitational influence of other stars as it travels around the galaxy.
Exif: Image Date: 2012:10:14
Camera: Canon EOS 7D
Focal Length: 1600mm
Exposure Time: 47 sec (Single Image – Not Stacked)