On July 26th and 27th, 2015, NASA‘s Cassini spacecraft made observations of Saturn’s icy moons Dione, Rhea, and Enceladus. Cassini’s ISS (imaging science subsystem camera) took images using clear, infrared, green, and ultraviolet light, among a couple others. The resulting images have been assembled from the raw uncalibrated data returned to Earth and appear in an “expanded” spectrum due to the use of infrared and ultraviolet. These moons would not appear as vibrant to the human eye.
All images credit: NASA/JPL/Space Science Institute, Assembled by Kevin M. Gill