Mars' Gillespie Lake outcrop on Mars - shown here in a photo taken by NASA's Curiosity rover - shows possible signs of ancient microbially induced sedimentary structures, according to a recent study. | NASA

Mars Microbe Traces Spotted by Rover? Probably Not

Intriguing features photographed by NASA's Mars rover Curiosity probably don't have a biological origin, mission team members say.

Published On 01/11/2015
10:00 AM EST