Which Planet Is All Water?

Earth is the only planet in our Solar System that has stable bodies of liquid water on the surface. On any other planet (or moon, asteroid, etc.), liquid water would immediately evaporate or freeze.

Is Neptune a water planet?

The ice giant planets Uranus and Neptune are water-rich worlds with deep layers of ice or possibly liquid water beneath their thick atmospheres. Their interior “oceans” are more extensive than the oceans on Earth or the ice deposits and/or subsurface lakes on Mars.

Which planet is a water planet?

Earth is the only known planet to have bodies of liquid water on its surface.