The only planet in our solar system confirmed to have both oxygen and water in significant amounts is Earth.
While traces of water have been found on other planets and moons, Earth is the only one where these elements exist in the forms necessary to support life as we know it.
Oxygen makes up about 21% of Earth's atmosphere, and water covers about 71% of its surface. This unique combination is essential for the existence of all known life forms on our planet.
Although other planets and moons may have water ice or trace amounts of oxygen, they lack the necessary conditions for liquid water and a breathable atmosphere, which are crucial for the development and sustenance of life.
