Discovery broadens the understanding of potential habitable conditions. 

Researchers studied Cassini mission images, concluding Mimas has an ocean. 

The ocean's depth is around 70 km, constituting over half the moon's volume. 

Contrary to expectations, Mimas, an old moon, lacks a global ocean appearance.

The ocean likely formed within the last 25 million years, challenging prior beliefs. 

Mimas stands out from moons like Enceladus or Europa, raising habitability questions. 

Cassini mission initially presumed Mimas was 4 billion years old and unchanging. 

This revelation prompts a reevaluation of habitable conditions within the solar system. 

Mimas suggests habitability potential extends beyond well-known oceanic moons.