Water-world #Enceladus seems to float atop #Saturn's rings as captured by our #Cassini mission. By most predictions prior to Cassini's arrival at Saturn, a moon the size of Enceladus (313 miles, 504 kilometers across) would have been expected to be a dead, frozen world. But Enceladus displays remarkable geologic activity, as evidenced by the plume emanating from its southern polar regions and its global, subsurface ocean.
#blackandwhite #photography #science #space #planets #NASA #NASABeyond #astronomy