How Is a Nebula Formed?

Answer

The collapse of gravitational gas in the ISM, or interstellar medium, is the main way that a nebula is formed. The light you see if from the ultraviolet light ionizing. You can find more information here: http://en.wikipedia.org/wiki/Nebula
1 Additional Answer
A nebula is formed from supernova explosions, or as a planetary nebula, or from gravitational collapses of gas in space. Most are formed by the collapse of gas, and as the material collapses massive stars can form in the center. You can find more information here: http://en. wikipedia. org/wiki/Nebula
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a nebula, which is Latin for cloud and made up of dust and many different gasses, is formed when it collapses under its own weight. Other times they are formed ...
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