Shifting patterns in the Titan landscape. Cool stuff indeed. This is the only place we’ve seen liquid seas/oceans beyond Earth, volcano’s yes, liquid oceans no. Ok so the seas/oceans on the Saturn moon Titan are mostly ethane and methane, still counts. Now enough history in images has been collected we can see changes in the seas/oceans structure, thanks to this great mission.
The press release offers possible explanations, could be as simple as well, gee I’m not sure, what would an “ice” berg be called if it was a hydrocarbon? A petrolberg or something I would guess.
As an aside, while I was spending my day painting the observatory (and finding a huge problem) I was thinking: what a good value these orbiting wonders are.
From the Cassini site:
These three images, created from Cassini Synthetic Aperture Radar (SAR) data, show the appearance and evolution of a mysterious feature in Ligeia Mare, one of the largest hydrocarbon seas on Saturn’s moon Titan. The views, taken during three different Cassini flybys of Titan, show that this feature was not visible in earlier radar images of the same region and its appearance changed between 2013 and 2014.
In the images, the dark areas represent the sea, which is thought to be composed of mostly methane and ethane. Most of the bright areas represent land surface above or just beneath the water line. The mysterious bright feature appears off the coast below center in the middle and right images.