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LOS ANGELES -- Scientists say they have found the strongest evidence yet that Saturn's largest moon harbors an ocean miles underground.

If it's confirmed, it would make Titan one of the few moons in the solar system with liquid water, an essential ingredient for life.

Previous discoveries pointed to methane-filled seas at Titan's poles and a possible lake near the equator. Scientists have long suspected Titan had a hidden ocean based on models and measurements by a spacecraft that landed on the surface.

The latest study was published online Thursday in the journal Science.