An arrowhead-shaped rock on Mars sporting features that may hint at ancient microbial activity on the Red Planet has left ...

NASA's Perseverance rover has encountered another rock on Mars that has left scientists puzzled.

Dark-rimmed ‘leopard spots’ in a rock studied by the rover last year could be the remains of Martian microbial activity, researchers said at a conference today. The announcement comes loaded ...

There are a couple potential explanations for distinctive markings found on a Martian rock, but new evidence suggests they ...

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 ...