![](http://static.ddmcdn.com/gif/blogs/dnews-files-2015-09-saturn-moon-ocean-250x250.jpg)
By measuring tiny wobbles in Enceladus' orbit, scientists have figured out that Enceladus has a giant ocean.
![](http://static.ddmcdn.com/gif/recipes/mercury-shrunk-200-140315.jpg)
New research shows that the planet completes a rotation on
its axis roughly 9 seconds faster than scientists previously thought.
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