Types of Nebulae
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The Omega Nebula, an example of an emission nebula
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The Horsehead Nebula, an example of a dark nebula.
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The Cat's Eye Nebula, an example of a planetary nebula.
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The Red Rectangle Nebula, an example of a protoplanetary nebula.
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The Crab Nebula, an example of a supernova remnant.
Read more about this topic: Nebula
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