The Moons

Ganymede is the largest moon in our solar system, and it is even larger than the planet Mercury.

Phobos is the closest moon to its planet, Mars, and it orbits the planet three times each day.

Io is the most volcanically active body in our solar system, with over 400 active volcanoes.

Europa is thought to have a subsurface ocean that may contain more water than all of the Earth's oceans combined.

Titan is the only moon in our solar system with a thick atmosphere, and it is the only celestial body other than Earth known to have liquid on its surface.

Triton is the only large moon in our solar system with a retrograde orbit, meaning it orbits its planet in the opposite direction of the planet's rotation.

Mimas is the smallest moon in our solar system, and it is only about the size of Manhattan.

Luna, also known as the Moon, has a surface covered in impact craters, including the giant impact basin Orientale, which is one of the largest impact basins in the solar system.

Io is the most volcanically active body in our solar system, and its surface is constantly being resurfaced by volcanic eruptions.

Europa has a surface that is covered in a thick layer of ice and snow, and it is thought to have a subsurface ocean that may be habitable.

Titan has a surface that is covered in a thick layer of organic compounds, including methane and ethane, and it is the only celestial body other than Earth known to have liquid on its surface.

Luna, also known as the Moon, has a surface that is covered in a thick layer of dust and rocks, and it is the only celestial body other than Earth that has been visited by humans.

Io is the most volcanically active body in our solar system, and its surface is covered in a thick layer of lava flows.

Europa has a surface that is covered in a thick layer of ice and snow, and it is thought to have a subsurface ocean that may be habitable.

Titan has a surface that is covered in a thick layer of organic compounds, including methane and ethane, and it is the only celestial body other than Earth known to have liquid on its surface.