Today's sky comes from the past. The atmosphere is very hazy and I don't remember how long it took to render. I wrote a sci-fi poem about this scene while at RavenCon a couple of years ago. It's not a particularly good poem.
This piece started with the sky. To set it off I added the bright orange coppery spheres. And then the mountains. It was so dry I had to add the bowl of water. Bryce does water very nicely.