Scientists using the ESA’s Herschel Space Observatory have just found where the water and oxygen in Saturn’s upper atmosphere comes from: it’s geyser-moon Enceladus!
The epic geysers on Enceladus are known to blast lots of water into space, but now we know that that water forms a giant taurus around Saturn. While most of the water-ice is turned into hydrogen and elemental oxygen in space, some of it makes its way to Saturn’s upper atmosphere. For over a decade we’ve known Saturn to have oxygen and water in his upper atmosphere, but we’ve had NO IDEA HOW. Until now!