NASA seems to have come up with new data suggesting that one of Jupiter’s moons known as Ganymede may have a hidden ocean underneath its surface. In fact, the ocean holds more water than all of the water on Earth. By studying the movement of the aurora belt, they were able to identify that there was likely presence of an ocean. Typically, scientists would see about 6 degrees of movement and here they only saw about 2 degrees signifying there is likely a large ocean underneath.
The ocean on Jupiter’s Ganymede is estimated to be much deeper than the oceans on Earth — about 60 miles thick and buried under 95 miles of ice. The moon’s ocean is believed to have more water than all of Earth.