It spent two decades in space, NASA’s Cassini spacecraft made its final plunge into the planet on September 15, 2017, and this is the final image it took of Saturn, made from raw images acquired by Cassini on September 13, 2017. According to Jason Major:
“These images are uncalibrated for color but were acquired in visible-light RGB filters. The mosaic comprises 11 color composites, each a stack of three images taken in red, green, and blue channels. They were adjusted for brightness and color to be fairly uniform across the whole view.” [source]
If you want to read and see more pictures from Cassini, click here.