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Gusev Crater as imaged by NASA's Spirit rover (NASA/JPL-Caltech)

Planets

To Find Life on Mars, Perhaps We Should Look Here

When exploring Gusev Crater in 2007, NASA's Spirit rover discovered some curious silica deposits — were they formed by ancient Martian life?

Published On 11/25/2016
3:36 PM EST
A comparison between the silica structures on Mars as seen by Spirit (left) and the El Tatio structures produced by microbial processes (right). Credit: NASA/JPL-Caltech, Steve Ruff