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20-20 Hindsight
Posted on Thursday, April 2, 2015
Uploaded by
Waspie_Dwarf

Image credit: NASA/JPL-Caltech/Space Science Institute
Uploader comment: Much as its name implies, tiny Epimetheus (Greek for hindsight) was discovered in hindsight. Astronomers originally thought that Janus and Epithemeus were the same object.
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