I’ve released the Sky system for free!!
Amazing. I was just trying that out in the blend you shared earlier. I see that since it’s made with geometry nodes, the atmosphere is more of a thin layer; there’s no atmospheric dispersion in the scene itself. How would I go about adding it without it ending up as a double dispersion for the sky?
The system creates a real-world sized Earth atmosphere with volumetrics, you just set the background (environment) to black, everything else is taken care of by the system.
Nice renders!
Give a look at the guide in the documentation 
, you’ll need to change some parameters to get the sky working the way it is meant to work.
Recently I developed it further. Fixed some things here and there, tidied it up a bit more…
Furthermore I added proper naming and comments to the nodes, so that it’s easier to understand how the volumetric Earth is composed.
For the Sun, I decided to use a 5900 K blackbody node, because according to Wikipedia the Sun above the atmosphere has such temperature color.
Atmosphere.blend (1.0 MB) (open with 5.3)