Reflection Nebula NGC 1999 in the Constellation Orion

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Reflection Nebula NGC 1999 in the Constellation Orion
The bright, young star left of center gives NGC 1999 its brightness. (Image credit: NASA and The Hubble Heritage Team (STScI))

Reflection nebulae do not emit light on their own. They shine because of a light source embedded within, like a street lamp illuminates fog. The bright, young star left of center gives NGC 1999 its brightness. The gas and dust of the nebula is left over from the star's formation.

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