Ocean discovered on Saturn's moon Mimas

Astronomers fishing for signs of life on other worlds got a nibble recently when they found a new ocean in a surprising place.

Mimas, a moon of Saturn, probably has a liquid ocean beneath its icy surface, according to a new paper in the journal Nature. That does not necessarily mean there’s extraterrestrial life there, but the discovery does raise some tantalizing questions.

Here & Now's Scott Tong speaks with science journalist Alexandra Witze.