Jupiter’s moon Europa has long been one of the most compelling objects in the solar system — not for what can be seen on its surface, but for what scientists suspect lies beneath it. A vast liquid ocean, possibly twice the volume of all Earth’s oceans combined, may sit under an icy shell roughly 15 [...] The post The icy surface of Europa is constantly crystallising and reforming in different places at different rates and the James Webb Space Telescope has only just caught it happening appeared