What planet does water exist as a liquid and gas?

Water exists as a liquid and gas primarily on Earth, where it can be found in various forms due to the planet's suitable temperatures and atmospheric pressure. Additionally, scientists have detected water vapor in the atmospheres of other celestial bodies, such as Venus and Mars, but liquid water is primarily stable on Earth. Some moons and icy bodies in the solar system, like Europa and Enceladus, also have subsurface oceans where liquid water may exist, but they are not classified as planets.