关于这张图
This illustration shows how oxygen is generated at Europa as a result of interaction between the Jovian moon's icy surface and Jupiter's plasma environment. A segment of Europa is cut away in the graphic to show its three layers – the icy shell, the ocean thought to be beneath the shell, and the moon's rocky mantle. Vertical "plasma flow streamlines" depict the flow of these charged particles in the vicinity of the moon. Some of the streamlines are oriented in such a way that their charged particles impact the moon's surface and split frozen water molecules present there into indivi…
