NASA scientists are baffled to discover a rock on Mars that 'doesn't belong there'
The Perseverance rover found the strange rock near the rim of the 28-mile-wide (45 kilometres) Jezero crater, which scientists think could have once hosted life.
Surface spots and nodules on rocks in ancient river valley are described in new study as ‘potential biosignatures’
Unusual features found in rocks on Mars may be the handiwork of ancient microbial lif…