Have you ever found life on Mars? NASA’s rover detects organic matter in rock samples


Mars

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NASA’s Perseverance rover is looking at signs of ancient life on Mars, and has now collected some of the most promising samples from the Red Planet to date.


According to NASA, several Stone Specimens containing organic matter have been found at Jezero Crater, a 28-mile-wide crater home to what scientists believe was once delta river Formed about 3.5 billion years ago.

“Jezero was chosen for this task because … it allows us to explore an ancient habitable environment (and) allows us to search for evidence of possible Martin life in rocks that were deposited at that time, about 3 and a half billion years ago. Since then, Keane said Farley, Perseverance Project scientist, at a taping board of rover results.

“I want to stress that this mission is not looking for surviving life, things that are still alive today. Instead, we’re looking at the very distant past, when the climate of Mars was very different from what it is today,” Farley added.

Perseverance launched in July 2020, and landed in February 2021 at Jezero Crater. NASA says that since July 7 this year, the rover has collected four samples from the delta – bringing the total number of samples collected “scientifically compelling.” rock samples“Up to 12.

Mars rocks with organic matter

Perseverance is currently studying sedimentary rocks in the delta. The rover had previously explored the floor of the Jezero Crater, and found igneous rocks. The contrast between the two “provides us with a rich understanding of the geological history after the crater formation and a variety of samples,” Farley said in a press release.

For example, the project scientist referred to aggregate mudstones containing “Interesting organic compounds. “

With the help of a tool called Scanning Habitable Environments with Raman & Luminescence for Organics and Chemicals, or SHERLOC, organic molecules It was found in “Wildcat Ridge,” a 3-foot-wide rock believed to have formed from clay and fine sand in an evaporating saltwater lake billions of years ago.

“We’re obviously discovering a bigger story than what’s going on at Jezero Crater. We’ve found signals that we think may be from organic matter on every target we’ve observed with SHERLOC so far,” said Sherlock scientist Sunanda Sharma. in the painting.

Sharma added that this was not “unexpected”, as it is consistent with previous research. “However, he says that organic matter appears to persist in the very harsh Martian surface environment, which is very exciting for us.”

According to NASA, the Curiosity Mars probe previously found evidence of organic matter in rock powder samples in 2013. Perseverance has also detected organic matter at Jezero Crater before, but the latest discovery was made in an area with conditions that would allow life, he says Scientists say its existence in the distant past.

“fact that organic matter It was found in like Sedimentary rocksImportant,” said Farley—who is known for preserving fossils of ancient life here on Earth.

“However, as capable as our instruments aboard the Perseverance are, more conclusions about what is in the Wildcat Ridge sample will have to wait until it is brought back to Earth for in-depth study as part of the (NASA and European Space Agency) Mars sample return. Campaign.”


NASA’s Perseverance rover is investigating the geologically rich terrain of Mars


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the quote: Have you ever found life on Mars? NASA’s Perseverance rover detects organic matter in rock samples (2022, September 16) Retrieved September 16, 2022 from https://phys.org/news/2022-09-life-mars-nasa-perseverance-rover.html

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