Enceladus is one of the three stars observed in geological eruptions in the solar system so far, and it is also one of the most important research objects in astrobiology  With the help of analytical instruments on the Cassini Saturn probe, German scientists found that the particles emitted by Enceladus contained sodium salts
Based on this, it can be inferred that there is liquid water on Enceladus, and there may even be an underground sea
Without geological eruptions on Enceladus, it would be impossible to find sodium salts.