This is an archive of AGU's GeoSpace blog through 1 July 2020. New content about AGU research can be found on Eos and the AGU newsroom.

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23 April 2020

Promising signs for Perseverance rover in its quest for past Martian life

New research indicates river delta deposits within Mars’ Jezero crater – the destination of NASA’ Perseverance rover – formed over time scales that promoted habitability and enhanced preservation of evidence.


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10 July 2018

Scientists discover “ghost dunes” on Mars

Scientists have discovered hundreds of crescent-shaped pits on Mars where sand dunes stood billions of years ago. The curves of these ancient dune impressions record the direction of prevailing winds on the Red Planet, providing potential clues to Mars’s past climate, and may hold evidence of ancient life.


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14 December 2016

Finger-like structures on Mars could be the result of ancient microbes

Finger-like rock structures on Mars could harbor potential evidence of past life on the Red Planet, according to new research. In 2007, NASA’s Spirit rover landed on Mars’ “Home Plate,” a flat 90-meter-long area within the Gusev crater. Since then, researchers have been trying to make sense of finger-like rock structures splayed across the landscape. The working hypothesis at the time was that these rocks started out as continuous layers but eroded into odd shapes by the touch of wind and sand over the years.


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