Summary:
- This article discusses a spider-like scar found on the surface of Jupiter's moon, Europa, which may be a frozen trace of salty subsurface water.
- The scar is believed to have been caused by water from Europa's subsurface ocean seeping through cracks in the moon's icy crust and then freezing on the surface.
- The presence of this scar provides further evidence that Europa has a liquid water ocean beneath its icy surface, which is of great interest to scientists studying the potential for life on this moon.