(CNN NEWSOURCE) Star Wars fans, this one a no-brainer for you.
Some fans of the franchise say a particular picture of a moon reminds them of the Death Star.
The picture shows Tethys, a moon orbiting around Saturn.
The giant circle in the middle is a crater formed by an impact at some point in the moon's history.
The photograph was taken by NASA's Cassini spacecraft that passed near Tethys in November.