The urge to explore the cosmos has always been an irrepressible part of humankind's curiosity. But while venturing into space ...

The outer solar system is awash with liquid water. A briny ocean is concealed beneath the icy crust of Jupiter’s fourth-largest moon, Europa—with more water than all of Earth’s oceans combined. A ...

The existence of another watery world in the outer solar system may offer clues to how such seas form—and hope for another spot to search for life. By Shannon Hall / Knowable Magazine Published Aug 10 ...