Clouds are behind custom moon mesh I've made.

  1. A trick I used for this problem is to make the moon largely transparent (like 20% opacity), and it looks pretty decent. I did this in Planetary Settlers for IO, in Jupiter’s sky. While the moon is actually in front of the clouds, it looks like the clouds are in front of it due to the transparency of the moon. It would still be better to have the clouds actually be in front of the moon though…

  2. Alternate method: Make the sky color partially transparent and place the moon outside the skysphere. I ended up making a copy of the skysphere, and a copy of the material it uses toward the beginning of the skysphere blueprint (do not edit the original). I edited the material that is used in the “Create Dynamic Material Instance” node. I changed the material from “Opaque” to “Translucent”, and put a wire from the opacity of “Overall Color” into “Opacity”. I then changed the Overall Color opacity to 20%, and the whole skysphere became translucent. Now you can see through it to objects behind as desired.

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