Europa's Hidden Ocean May Hold Clues to Life

Europa, one of Jupiter's moons, is covered in a thick layer of ice.

Scientists think there's a huge ocean of liquid water hidden beneath this ice.

This ocean might have everything needed for life: water, chemicals, and energy.

Europa is very cold and gets a lot of radiation from Jupiter, but the ocean stays liquid because of heat from Jupiter's gravity.

The moon is smaller than Jupiter's other big moons and has a smooth surface with few craters.

It also has a thin atmosphere made of oxygen, but not enough for humans to breathe.

Scientists are excited because Europa could help us learn more about life in other places in the universe.