The ancients saw the Sea and the Night Sky as very similar in their nature. The Waters Above, and the Waters Below. Space was not a vacuum, but rather full of the Astral Fluid, within which the stars floated. Both were vast, and both contained Powers that they could petition for favor. The oldest human settlements we have uncovered show evidence of rich star-lore embedded in stone. So too, there are mythologies depicting star beings that came down to live in the waters. Who knows if all those star beings left the planet?