Definition of emission nebula in English:
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.
Definition of emission nebula in:
- US English dictionary