Blue hue on Saturn with Titan in front

NASA has released a mosaic combining six images -- two each of red, green and blue spectral filters -- to create this natural color view of the large moon Titan orbiting the planet Saturn. The images were obtained with the Cassini spacecraft wide-angle camera on 6 May 2012, at a distance of approximately 483,000 miles (778,000 kilometers) from Titan.  The rings of saturn have cast a shadow on the planet.  The bluish hue is thought due to the intensity of ultraviolet light and the haze it produces.  This changes according with the seasons for each hemisphere.

Saturn and Titan Image courtesy: NASA/JPL-Caltech/SSI