For more detail this asset from the Unity Asset Store: Click Here
This is a paid asset, but now you can download Northern Lights Pack for FREE, Please keep in mind this package is provided only for learning purposes or to be able to test before buying the product, NOT FOR COMMERCIAL PURPOSES.
Northern Lights Pack v1.1.1 (Latest version)
Northern Lights Pack v1.0
“If possible, please buy the package to support the developer”
This package contains a collection of Northern Lights effects. These effects are great for adding color and visual interest to any winter or northern themed scenes.
The package contains seven prefabs with different color and shape variations.
The first shape variation is a single curtain of northern lights which must be placed manually throughout the scene.
The second variation renders northern lights all across the sky and provides more movement and randomness.