Jupiter's moon Europa has long captivated scientists as one of the solar system's best bets for finding alien life. With its vast subsurface ocean containing more water than all of Earth's seas combined, it seemed like the perfect cosmic petri dish. But new research is throwing cold water on those hopes—literally.

By studying Europa's rocky core and its gravitational dance with Jupiter, researchers have concluded that the moon is likely geologically dead. Without active volcanism or hydrothermal vents on its seafloor, there's no energy source to spark or sustain life. The internal heat that once warmed this alien ocean has dissipated, leaving behind a cold, sterile sea sealed beneath miles of ice.

Does this mean Europa is a lost cause? Not entirely. The 2031 Europa Clipper mission will scan the moon's ice shell and probe its ocean's chemistry, potentially rewriting what we know about this enigmatic world. Join us as we explore why the absence of geological activity matters so much for astrobiology, what makes hydrothermal vents essential for life, and whether Europa still deserves its spot on our list of places to search for cosmic neighbors.