Ganymede

Ganymede is the largest moon orbiting Jupiter and the biggest moon in our solar system. It is about 5,268 kilometers (3,273 miles) wide—greater than the planet Mercury. Ganymede has a thick, icy surface with features like grooves and ridges, and it is believed to have a subsurface ocean of liquid water beneath the ice, which may harbor the conditions needed for life. The moon also has a magnetic field, a rare feature for moons, and a layered interior composed of metal, rock, and ice. These characteristics make Ganymede an intriguing object of study for understanding planetary processes and potential habitability.