several planets and moons in our solar system are known or suspected to have water. Here is a list of the most notable ones:
Earth: Our planet has abundant surface water in the form of oceans, lakes, rivers, and glaciers.
Mars: Although Mars is predominantly dry, evidence suggests that water exists in the form of ice at its poles and possibly in underground reservoirs. Some studies have also indicated the presence of briny water intermittently flowing on its surface.
Europa: One of Jupiter's moons, Europa, is considered one of the most promising candidates for having liquid water beneath its icy crust. It is believed to have a subsurface ocean that may contain more than twice the amount of water found on Earth.
Enceladus: A moon of Saturn, Enceladus, has geysers that emit jets of water vapor and icy particles from its south pole. These eruptions strongly suggest the presence of a subsurface ocean beneath its icy shell.
Ganymede and Callisto: Two of Jupiter's other moons, Ganymede and Callisto, are thought to have subsurface oceans. Ganymede is the largest moon in the solar system and is believed to have more water than Earth's oceans, while Callisto may have a subsurface saltwater ocean.
Titan: Saturn's largest moon, Titan, has lakes and seas on its surface, but they are composed of liquid methane and ethane rather than water due to the extremely cold temperatures.
Triton: Neptune's largest moon, Triton, is suspected to have subsurface oceans of liquid water beneath its icy crust. However, the presence and extent of these oceans are still under investigation.
It's worth noting that our understanding of celestial bodies in the solar system is continually evolving as scientific missions and observations provide new data. Therefore, the current knowledge about water on planets and moons may have been updated since my last training update in 2023.