HomeAUAncient Martian Rocks Reveal Potential Signs of Life from Three Billion Years...

Ancient Martian Rocks Reveal Potential Signs of Life from Three Billion Years Ago

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A tiny find inside some three-billion-year-old rocks by NASA’s Perseverance rover is adding to a growing body of evidence that life once existed on Mars.
The Perseverance rover made its way through Neretva Vallis – an ancient river channel that once carried water into a lake in a Martian crater – in 2024.

The ancient rockbed on Mars is estimated to be over three billion years old.

This image provided by NASA shows NASA’s Perseverance Mars rover taking a selfie, made up of 62 individual images on July 23, 2024. (NASA via AP) (AP)

Perseverance utilized advanced technologies such as laser, infrared, and X-ray to analyze 126 sedimentary rocks and eight rock surfaces within the Neretva Vallis region.

A team of researchers led by Henry Manelski from Purdue University in the United States say among the discoveries was a large number of nickel-rich rocks with a similar chemical composition and shape of the iron sulfide arrangements to pyrite – sedimentary rocks found on Earth.

This discovery is crucial as previous studies have indicated that pyrite often forms through chemical reactions involving living microorganisms.

Even if the nickel-rich rocks weren’t created by microbial life, they provide further evidence that Mars might have once supported life.

Nickel plays a vital role in the enzymes of many ancient life forms, including archaea and various bacterial species.

The find adds to a growing body of evidence that life could have once existed on the Martian planet.

It’s not the first discovery that Perseverance has made on the topic.

In 2024, the rover discovered rocky “leopard spots” in the Jezero crater, indicative of ancient microbial chemical reactions.

This NASA image shows leopard spots on a reddish rock nicknamed Cheyava Falls in the Jezero Crater discovered by NASAs Perseverance rover in July 2024. (AP)

NASA’s acting administrator Sean Duffy called that find “the closest we have ever come to discovering life on Mars”.

“The identification of a potential biosignature on the Red Planet is a groundbreaking discovery, and one that will advance our understanding of Mars,” he said at the time.

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