Like Earth, Jupiter has auroras that gleam at its poles but, unlike Earth, astronomers have noticed that Ganymede and Io each add their own personal stamp to the planet’s auroras.

As the Cassini spacecraft orbits the Saturn system, it is showing astronomers that Saturn's largest moon, Titan, has many weather and geologic features that are similar to Earth's.

Recent images from NASA’s Cassini spacecraft show a luminous dot speeding within the G ring, one of the planet’s faintest, least-understood rings.