An image taken several years ago by the panoramic camera on NASA's Spirit rover has gained new attention recently after enthusiasts spotted what appears to be a humanoid skull partially buried in the Martian sand. Paranormal Crucible posted video on its YouTube channel of the image with a superimposed skull for comparison. The UFO Sightings Daily website has published its own examination of the image and concluded there is an 80 percent chance it's a real skull. More at Huffington Post.