The planet (and moon) models were made in Bryce. Eben consists of 10 spheres, each one a tiny, tiny bit bigger than the one within it. The innermost sphere is nothing but the oceans. Then, in order to minimize distortion, each continent was centered onto its own map, projected onto its own sphere and rolled into place. The outer four spheres make up the atmosphere. They consist of a cloud map and a storm map with hurricanes. Both of those I found online. Finally a bluish haze sphere went over everything and the outermost sphere is the atmosphere. I used Bryce's material adjustments to make it soft, fuzzy, and slightly glowing.