CB-36 is a sketch of the Chesley Bonestell painting Saturn from his Satellite Rhea.
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This sketch was part of the Chesley Bonestell Early Studies of Planetary Landscapes collection, consisting of a group of 21 oil sketches. The sketches were once housed in a three prong binder, and inscribed by the artist with his Hollywood address. CB-36 is one of the earliest surviving space paintings by Bonestell known to Ron Miller and Frederick C. Durant III.