Sea salt may stripe Europa’s surface
Brown deposits could come from water-rock interaction on the seafloor, a promising sign for a habitable environment
![Europa](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2015/05/cc_europa_free.jpg?fit=860%2C460&ssl=1)
PINCH OF SALT Colored bands and patches on the surface of Europa might come from irradiated sea salt deposited by a subsurface ocean.
JPL-Caltech/NASA, SETI Institute