The helmet rock found by the Perseverance rover could rewrite our understanding of the geology of the red planet.<br />Scientists are baffled by a rock composed almost entirely of spherules. What is the Martian surface hiding?<br />Follow the latest findings from NASA's mission on Mars, as the rover explores the Jezero crater.<br />#PerseveranceDiscovers<br />#MarsMysteries <br />#MarsRevealsItsSecrets