Astronomy
The Subsurface Ocean of Enceladus and Its Hydrothermal Vents
Quick fact
Enceladus is only about 500 km in diameter, yet its subsurface ocean contains more liquid water than all of Earth's oceans combined.
Why this is interesting
Imagine a world where a hidden ocean erupts into space through icy geysers—a tiny moon of Saturn holds this secret. Could it be the best place to find alien life in our solar system?