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

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 ...

Scientists remain puzzled by these discoveries. A close-up of the Martian rock of interest, showing areas called 'poppy seeds' and 'leopard spots'. Credit: J.A. Hurowitz et al. The rock, named Cheyava ...

The rock features spots of black, blue, or greenish hues, which the researchers have nicknamed "poppy seeds." Alongside these are dozens of dark-rimmed, millimeter-size splotches dubbed "leopard ...