Cassini flew within 746 miles above surface of Titan, capturing the most detailed images ever taken of Saturn's giant moon. But the new images have perplexed scientists.
The huge cloud formation over Titan's south pole was expected to be made of methane. Data gathered by Cassini, however, shows the particles that make up the cloud are too large to be methane.
Chris McKay, a planetary scientist with the NASA Ames Research Center, offers one possibility: "it's some sort of organic goo. It could be some sort of organic polymer, essentially plastic particles. Maybe little polystyrene foam balls. Who knows?" Read more at Space.com(1)
Credit: NASA/JPL/Space Science Institute