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

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 ...

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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 ...

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 ...