Every Strange Thing That Could Be Alive In Our Solar System Explained In 17 Minutes

Europa. If you could stand on the surface of Jupiter's sixth moon, you would see a landscape of cracked white ice stretching flat to the horizon, silent, frozen, and apparently dead. The temperature at your feet would be around minus 160 degrees Celsius. Nothing survives there. But you would be standing on a lid. Beneath that shell of ice, somewhere between 15 and 25 kilometers down, there is an ocean. Not a lake, not a pocket of meltwater. An ocean of liquid saltwater that holds more than twice the water of every ocean on Earth combined. It has stayed liquid for billions of years, and the reason is Jupiter.