NASA's Curiosity rover has sent back close-up images of large, web-like geological formations on Mars, dubbed "boxwork." These structures, up to 20 kilometers across, are mineral-rich ridges formed by ancient groundwater. The discovery of calcium sulfate veins, previously unseen at such heights on Mount Sharp, further supports the theory of past liquid water. Scientists believe studying the boxwork could reveal crucial information about Mars' past habitability and potential for life.

Prepared by Olivia Bennett and reviewed by editorial team.