Anomaly hunters studying images from Mars believe they have spotted yet another out-of-place item in the form of an eye-catching ball of some kind on the surface of the Red Planet.
Noticed in a photo taken by NASA's Mars Curiosity Rover, the odd grey object looks remarkably smooth and spherical, standing out among the jagged rocks around it.
It is believed that the ball is around the same size as a softball or, as some imaginative observers have noted, a cannonball.
This particular perspective argues that the anomaly is further evidence that there was some kind of battle on the Red Planet prior to a collapse of the Martian civilization.
Skeptics, however, tell a different story. Find out more at the Coast to Coast AM website.