NASA’s Perseverance rover stationed on Mars spotted a dome-shaped rock with a striking resemblance to a helmet used during medieval times. The martian rock, captured by Perseverance’s primary camera on Aug. 5, is pointed at the top and dome-shaped on top of a flared brim. It has a rough, textured surface covered in small bumps.

The Mastcam-Z instrument, a pair of zoom-capable cameras on Perseverance's neck-like mast, allows scientists to capture high-resolution stereo images and spot unusual features like this spherule-covered "helmet" rock from a distance.