AUGUST 21 (Reuters) — NASA shed new light on Saturn’s orbiting moon Dione on Thursday (August 20), with pictures taken by the Cassini spacecraft during its latest close approach to the icy world on Monday (August 17). The series of grey, black and white images show Dione’s icy terrain that NASA says shows the surface in “the best resolution ever.” But the latest images aren’t the work of the closest flyover for this particular NASA […]