The intriguing chemistry of a rock collected by the Perseverance rover could trace to microbial activity—or not ...

A rock on Mars that may hold clues about ancient microbial life on the Red Planet continues to puzzle scientists.

NASA's Perseverance rover discovered a rock that may hold the proof that microbial life once existed on Mars. Over the years, NASA rovers have investigated countless rocks on Mars. In doing so ...

A close up of the Mars rock of interest, showing where the poppy seeds and leopard spots are found. | Credit: J.A. Hurowitz et. al. An arrowhead-shaped rock on Mars sporting features that may hint ...