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The Curiosity Rover May Have Discovered What Wiped Away Ancient Signs of Life on Mars BEN TURNER, LIVE SCIENCE 17 JULY 2021 Evidence of ancient life may have been scrubbed from parts of Mars, a new NASA study has found.  The space agency s Curiosity rover made the surprising discovery while investigating clay-rich sedimentary rocks around its landing site in Gale Crater, a former lake that was made when an asteroid struck the Red Planet roughly 3.6 billion years ago.   Clay is a good signpost towards evidence of life because it s usually created when rocky minerals weather away and rot after contact with water – a key ingredient for life. It is also an excellent material for storing microbial fossils.

United statesCalifornia institute of technologyAmes research centerMountain viewAshwin vasavadaJohn grotzingerTom bristowPropulsion laboratoryGale craterRed planetResearch centerCalifornia institutePerseverance marsLive scienceஒன்றுபட்டது மாநிலங்களில்கலிஃபோர்னியா நிறுவனம் ஆஃப் தொழில்நுட்பம்