We’ve also found water on the moon. And we know at least one Jupiter satellite has water. So that’s at least 4 bodies in the solar system that have water and

We’ve also found water on the moon. And we know at least one Jupiter satellite has water. So that’s at least 4 bodies in the solar system that have water and all the bodies where we have successfully landed more than 1 rover have or had water (earth, moon, mars). Every body where we could have discovered water, we have discovered water. Seems like bayes theorem indicates that water is also probably highly available in the universe.