Home > Science > Astronomy > Nebulae > Emission Nebulae
Emission Nebulae: The Final Frontier Emission nebulae derive their name from the light that is emitted from gas excited by energetic radiation from nearby hot stars. The gas is always rich in hydrogen, which happens to be the most abundant element. Nebulae therefore radiate with a distinctive red hue. The hydrogen often mixes with oxygen, which provides green light. Green and red combine to ...
www.shawnee.cc.il.us/craigb/ast111/papers/dustinwareing/index.htm
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