"That's no moon. It's a space station."

NASA's Cassini Space Probe shot some new pictures of the crater Herschel on Saturn's moon Mimas, above left. There is a curious resemblance to another image that's been seen for the last 30 years. The crater is ~130 Km wide, so it can be seen from Earth. No surprises there. Mimas itself is about 400 Km wide, twice the putative dimensions of the Death Star.

Is the discovery of the moon Themis from John Varley's Titan next?