The icy moon Europa may hide secrets deeper than we imagined

Space · Published 22 October 2026 Swipe more like this →

In short: NASA's Europa Clipper is currently racing toward Jupiter to see if life could exist beneath a frozen crust. But new research suggests that the water we hope to sample might not be connected to the vast, hidden ocean where the real biological action would happen.

Launched on October 14, 2024, by a SpaceX Falcon Heavy rocket, the Europa Clipper is Earth's first mission dedicated to a detailed science investigation of Jupiter's moon. The spacecraft is traveling 1.8 billion miles to reach its destination in April 2030. Once there, it will perform 49 close flybys of Europa, using nine simultaneous science instruments and a gravity experiment to determine if the moon possesses habitable conditions.

The primary draw for scientists is a subsurface ocean of liquid water hidden beneath an icy shell. For years, researchers hoped that this deep water might rise through cracks to form shallow reservoirs near the surface—pockets that would be much easier for spacecraft to study than the buried sea. However, new computer simulations led by Rutgers scientist Lujendra Ojha suggest this journey is unlikely. The models show that turbulent water rising from the depths would rapidly lose heat and form ice crystals, potentially clogging fractures within hours.

This finding introduces a significant complication for future exploration. If spacecraft do detect shallow liquid pockets, they might be isolated from the deep ocean entirely, formed instead by local melting of the ice shell. This matters because the most scientifically compelling environment—the one with the right combination of water, chemistry, and energy to support life—is the deeply buried ocean. While shallow water is easier to reach, it may offer very little information about the moon's true potential for habitability.

The mission aims to establish a new field of extraterrestrial oceanography by confirming the presence of this subsurface sea and determining its chemical composition. By studying both the surface features and the ice crust, scientists hope to understand whether Europa provides a viable home for life beyond Earth.

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