Remove startup warnings

data/scene/milkyway/milkyway.mod

@@ -6,6 +6,7 @@ return {
             Type = "RenderableSphere",
             Size = 10E22,
             Segments = 40,
+            Alpha = 0.2,
             Texture = "textures/DarkUniverse_mellinger_8k.jpg",
             Orientation = "Inside/Outside"
         }