
Titan: No Global Ocean After All—Slushy Ice and Warm Pockets Rework Its Interior
A 2025 Nature reanalysis of Cassini radio data finds Titan’s tidal lag of about 15 hours implies energy dissipation too large for a global subsurface ocean, instead suggesting a thick, high‑pressure ice layer with slush and pockets of warm water. The result reshapes the search for life beyond Earth and keeps Titan’s interior open to future tests, such as seismic measurements from the Dragonfly mission, while debates over the exact k2 values continue.












