According to NASA, its Cassini spacecraft has observed a massive ice cloud that has formed around the south pole of Saturn’s largest moon Titan; the system is believed to be connected to a seasonal change towards winter.

Saturn’s largest moon appears to be descending into a very cold winter. 
NASA has recently announced that its Cassini spacecraft has sent back data that indicates, according to the press release, “a monstrous new cloud of frozen compounds in the moon’s low- to mid-stratosphere.” 
This south pole weather system, which hangs 124 miles above the moon’s surface, is much larger than the ice cloud hovering above it at an altitude of 186 miles. That one was discovered in 2012.
In contrast to clouds on Earth, Titan’s polar clouds tend to form in lay