Saturn, seen in purples, greens and blues, is surrounded by its bright yellow rings.

Saturn in Ultraviolet Light

This Hubble Space Telescope ultraviolet image of Saturn was taken when the planet's rings were at a maximum tilt of 27 degrees toward Earth. Saturn experiences seasonal tilts away from and toward the Sun, much the same way Earth does. This happens over the course of its 29.5-year orbit. This means that approximately every 30 years, Earth observers can catch their best glimpse of Saturn's south pole and the southern side of the planet's rings.

Credits: NASA and E. Karkoschka (University of Arizona)