Rare, elliptical craters reveal new clues about strange Saturn moons Tethys and Dione

Rare, elliptical craters reveal new clues about strange Saturn moons Tethys and Dione

Rare, elliptical craters spotted on two of Saturn’s moons reveal new clues about the satellites’ age and formation, a new study shows. 

Using data from NASA’s Cassini mission, researchers from the Southwest Research Institute (SwRI) measured elliptical craters on Saturn’s moons Tethys and Dione. Whereas circular craters are fairly common and form under various impact conditions, elliptical craters are rarer and are believed to form from slow and shallow impacts, according to a statement from the SwRI


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