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A nebula that shines with its own light.
- ‘The Orion Nebula is an emission nebula, a giant cloud of gas and dust that's lit from within.’
- ‘Kaylin examined the cloud that was the emission nebula as her ship raced closer and closer.’
- ‘Resembling a creature on the run with flames streaming behind it, the Spitzer image of a dark globule in the emission nebula IC 1396 is in spectacular contrast to the view seen in visible light.’
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