Mars rover finds helmet-shaped rock made almost entirely of spherules

The six-wheeled explorer Perseverance has discovered an intriguing rock on the surface of Mars that resembles either a battle helmet or a volcano.
In a new image captured by the rover using its main camera system, Mastcam-Z, the rock shows a pointed top and a knobby texture, reminiscent of ancient armor. On Earth, such textures can form due to chemical weathering, mineral deposition, and even volcanic activity. Back in March, Perseverance found a similar rock.

David Eagle, a member of the Perseverance team at NASA’s Jet Propulsion Laboratory, says the helmet-shaped rock is fascinating not just for its shape. What intrigues scientists most is that the rock is almost entirely composed of spherules, Live Science reports.
Researchers believe these spherical structures form when groundwater seeps through the pores of sedimentary rocks. However, scientists aren’t sure all spherules share the same origin. The Perseverance team faces a lot of work analyzing new samples. They hope to eventually uncover answers to this Martian geology mystery and other pressing questions about Mars.
Mastcam-Z is a spectral stereoscopic imaging device. It consists of a pair of zoom cameras mounted on the neck-like mast of Perseverance. Mastcam-Z helps scientists spot unusual objects, like this helmet-shaped rock, from a considerable distance and create high-resolution stereo images.
Previously, Perseverance began building a gallery of Martian rocks with bizarre shapes. Among them are rocks that look like donuts and strange formations resembling avocados.
These objects, including the helmet rock, help scientists investigate the environmental history of the Red Planet and understand how wind, water, and internal processes have shaped Mars’ landscape over billions of years.
Photo: Openverse