Yes, as far as we know.
Why scientists believe a liquid water ocean might exist on the moon Titan
Mars scientists found water on. Mars
Scientist believe that the planet Mars used to have flowing liquid water. Now, the water on Mars exists almost exclusively as ice.
Under Titan's surface, there may be ice. NASA scientists believe there is liquid water beneath the water ice.
active volcanoes Ice several miles thick, and oceans of liquid water beneath the ice.
Scientists believe that there is liquid water, under the crust of Europa.
Why scientists believe a liquid water ocean might exist on the moon
We have found minerals and other formations on Mars that show it once had bodies of liquid water. As we currently understand it, liquid water is the most important ingredient for life.
Scientists usually refer to it using the highly technical term water.
Why do scientists believe there might be water on the Moon?
Mars is the planet thought to have had liquid water in the past based on various geological features such as canyons, river valleys, and mineral signatures found on the surface. These suggest that Mars likely had a more hospitable environment billions of years ago where liquid water could have existed.
Scientists believe that the water on Mars exists primarily as ice, particularly in the polar ice caps and beneath the surface. There are also signs of transient liquid water in the form of briny flows, but these are less common. The detection of hydrated minerals suggests that water once flowed on the Martian surface, indicating a more dynamic water history in the past. Overall, while liquid water is scarce today, evidence supports that Mars has a significant amount of water in various states.