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Janus Stands Alone
Posted on Tuesday, May 19, 2015
Uploaded by
Waspie_Dwarf

Image credit: NASA/JPL-Caltech/Space Science Institute
Uploader comment: Although Janus should be the least lonely of all moons - sharing its orbit with Epimetheus - it still spends most of its orbit far from other moons, alone in the vastness of space. Janus (111 miles or 179 kilometers across) and Epimetheus have the same average distance from Saturn, but they take turns being a little closer or a little farther from Saturn, swapping positions approximately every 4 years.
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