Under Europa's icy surface is a salty ocean that contains twice as much water than that on earth.
Before you start sputtering about HAL 9000, monoliths and Europa, that's Io's shadow we're looking at.
The new moons bring Jupiter's total count to 79, making it the most moon-rich planet in our system.
The Mecca for world cinema begins as the week long 2017 Cannes Film Festival kicks in.
Jupiter's moon Europa — strongly believed to hide a deep ocean of salty liquid water beneath its icy shell