Table salt compound spotted on Europa
(PHYSorg.com Space & Earth)

A familiar ingredient has been hiding in plain sight on the surface of Jupiter`s moon Europa. Using a visible light spectral analysis, planetary scientists at Caltech and the Jet Propulsion Laboratory, which Caltech manages for NASA, have discovered that the yellow color visible on portions of the surface of Europa is actually sodium chloride, a compound known on Earth as table salt, which is also the principal component of sea salt.