Politics & Society

Amazing Facts About Nebulae

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A nebula is a cloud of gas and dust in interstellar space. Every nebula contains hydrogen and helium, plus a mixture of other gases. There are several types of nebulae (plural of “nebula): molecular clouds (also known as HII regions because they are mainly hydrogen), dark nebulae, supernova remnants, and planetary nebulae. Our galaxy has many nebulae, and astronomers have found these clouds in other galaxies, as well.
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