Nasa's Cassini spacecraft has captured dramatic images of rolling storm clouds on Saturn.
The pictures were obtained while the spacecraft was "travelling the Saturnian system in a set of inclined, or tilted, orbits that give mission scientists a vertigo-inducing view of Saturn's polar regions," Nasa said.
The results show storm clouds and a swirling vortex at the centre of Saturn's north polar hexagon.
Nasa said Cassini has seen storms circling Saturn's north pole in the past, but only in infrared wavelengths because the north pole was in darkness.
But, with the change of the Saturnian seasons, the sun has begun to creep over the planet's north pole.
The recent finds mimic a phenomena that Cassini found at Saturn's south pole a number of years ago.
The Cassini-Huygens mission is a joint venture involving Nasa, the European Space Agency and the Italian Space Agency.
It was launched in 1997 and entered into Saturn's orbit in 2004.
It has been studying the planet and its many moons since then.