Neptune
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.
Personally, I believe that the discovery of liquid water is so important is because all forms of life need water to survive. :-), Ri
The question seems poorly worded, but Earth is the planet with liquid water on its surface.
I believe you mean Mars (under current exploration) ... but several satellites are known to have water too.
Earth is the only known planet to have oceans of liquid water.
Google says that earth has 70% water on the planet but there is no planet with water on it completely.
earth
Earth.
Earth is the only known planet with liquid water.
Ceres is a dwarf planet, not a planet. It is believed to have a substantial amount of ice, but not liquid water.
Earth is the planet that is mostly made of liquid water, covering approximately 71% of its surface.