Cassini mosaic of Rhea
A terraformed Rhea made by Triniwiki in Universe Sandbox 2.
Rhea is the second larget moon of Saturn and named after Titan Rhea, of ancient Greek Mythology. It was discovered in 1672 by Giovanni Domenico Cassini.
Terraforming Rhea would require
A view of Rhea (left) facing the distant Sun (middle) while orbiting its parent object, Saturn (right).
creating an atmosphere possibly using SF6 (better known as Sulfur Hexaflouride).