After years of debate, NASA researchers have zeroed in on the thickness of the Europa's ice shell. We first discovered that the Jupiter moon's surface looked icy in 1979, when Voyager 2 flew by.

How thick is the ice shell on Jupiter’s moon, Europa? This is what a recent study published in Nature Astronomy hopes to address as a team of scientists revealed groundbreaking insights into Europa’s ...

The shell of ice that expands atop the Arctic Ocean every winter has done all the growing it will do this season—and that hasn’t been much. In fact, the annual winter maximum sea ice extent this ...