Europa, one of Jupiter’s many moons, is hiding a secret beneath its icy crust, but humanity is closer than ever to cracking it.
Thought to possess a vast subsurface ocean of liquid water, the fourth-largest Jovian moon is a tantalizing place that could have all the right conditions for extraterrestrial life. In fact, NASA is currently designing a devoted mission, called the Europa Clipper, to possibly reveal its habitable potential. But scientists didn’t need a new spacecraft to make this ground-breaking discovery; they studied old data from a spacecraft that was exploring Jupiter in 1997. That’s according to a May 2018 study published in the journal Nature Astronomy. Read more