I once knew both how atmospheres formed on planets and how oceans of liquid water formed on planets, but I have forgotten that information. I know that both atmospheres and oceans of liquid water formed due to chemical reactions, but I used to know more of the details of what type of matters formed oceans and atmospheres. Since I no longer know the details, I no longer know whether or not it would be possible for planets to have oceans of liquid water without an atmosphere of oxygen and other elements that make up air. I no longer know if water and an atmosphere must necessarily go together. For the purposes of my question, i'm asking if a planet could have liquid water without any intelligent life bringing the liquid water to the planet and without an atmosphere. Without any intelligent life bringing liquid water to a planet, could a planet have large oceans of liquid water without an atmosphere? Please explain your answers.