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NASA says Mars rock pattern exhibits ‘potential biosignatures’ : NPR

September 10, 2025
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NASA says Mars rock pattern exhibits ‘potential biosignatures’ : NPR
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NASA's Perseverance Mars rover captured this image of a rocky area nicknamed "Cheyava Falls" on July 18, 2024, showing black "poppy seed" and larger "leopard spot" features. Researchers say a sample from the site reveals a tantalizing mix of details suggesting the potential presence of life, billions of years ago.

NASA’s Perseverance Mars rover captured this picture of a rocky space nicknamed “Cheyava Falls” on July 18, 2024, displaying black “poppy seed” and bigger “leopard spot” options. Researchers say a pattern from the positioning reveals a tantalizing mixture of particulars suggesting the potential presence of life, billions of years in the past.

NASA/JPL-Caltech/MSSS


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NASA/JPL-Caltech/MSSS

A very long time in the past, life left microscopic signatures on Mars — or did it? That is the query NASA scientists have labored for years to reply. On Wednesday, NASA researchers said the reply is likely to be in a rock pattern that “accommodates potential biosignatures.”

NASA's Perseverance rover took this "selfie" next to a rock where it drilled for samples. NASA wants to bring samples collected by this rover back to Earth.

The discovering, printed Wednesday within the journal Nature, places the company one step nearer to answering one in all humanity’s most profound questions on life within the universe, stated Nicky Fox, affiliate administrator of NASA’s science mission directorate.

“This discovering by our unbelievable Perseverance rover is the closest we have really come to discovering historical life on Mars. And if you cannot inform, we’re actually enthusiastic about that,” Fox stated throughout a information convention at NASA’s headquarters in Washington.

The thrilling rock pattern in query is dubbed Sapphire Canyon. NASA’s Perseverance Mars rover collected it final summer season from a reddish, vein-filled rock alongside the sting of an historical, quarter-mile extensive river valley referred to as Neretva Vallis.

The valley was carved by water flowing into the big Jezero Crater, which additionally held a lake billions of years in the past.

“Jezero was chosen as a result of it is in a location amongst probably the most historical terrains on Mars, exposing among the oldest rocks anyplace within the photo voltaic system,” stated Katie Stack Morgan, Perseverance challenge scientist at NASA’s Jet Propulsion Laboratory in Southern California.

“These actually historical rocks present us a window right into a time frame that is not significantly nicely represented on our personal planet Earth,” she added. “However it’s a time when life was emergent on Earth, and will have been on Mars as nicely.”

NASA's Perseverance rover took this photo next to a rock where it drilled for samples. NASA wants to bring samples collected by this rover back to Earth.

Perseverance landed within the crater in early 2021, with the purpose of accumulating and analyzing samples that may let researchers research an historical river delta — recognized as a probably wealthy supply of indicators of historical microbial life.

Then, in July 2024, Perseverance discovered the rock that has tantalized scientists for months. NASA researchers say it has options comparable to small black “poppy seed” spots and bigger “leopard spots” — patterns which might be typically telltale indicators related to life.

“That is the form of signature that we’d see that was made by one thing organic,” Fox stated. “On this case, it is form of the equal of seeing leftover fossils … leftovers from a meal. And perhaps that meal has been excreted by a microbe. And that is what we’re seeing on this pattern.”

Researchers utilizing the rover’s tools to research the rock’s spots and dots discovered minerals containing iron, phosphorus and sulfur, a Perseverance scientist and lead creator of the research, Joel Hurowitz of Stony Brook College in New York, stated at Wednesday’s information convention.

What’s thrilling is {that a} mixture of mud and natural matter has reacted to provide these minerals and these textures, Hurowitz stated.

“Once we see options like this in sediment on Earth,” Hurowitz defined, “these minerals are sometimes the byproduct of microbial metabolisms which might be consuming natural matter and making these minerals on account of these reactions.”

However, he added, there are additionally “nonbiological methods to make these options that we can not utterly rule out” because the trigger with the present knowledge, comparable to being heated to extraordinarily excessive temperatures.

NASA's Perseverance Mars rover took this selfie, made up of 62 individual images, on July 23, 2024. A rock nicknamed "Cheyava Falls," which has features that may bear on the question of whether the red planet was home to microscopic life long ago, is to the left of the rover near the center of the image.

The Perseverance Mars rover took this selfie, made up of 62 particular person photographs, on July 23, 2024. “Cheyava Falls” is to the left of the rover close to the middle of the picture.

NASA/JPL-Caltech/MSSS


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NASA/JPL-Caltech/MSSS

The subsequent large step, Hurowitz and others on the NASA occasion stated, can be to research these rocks additional — and in individual. It might be the primary time a pristine piece of one other planet can be delivered to Earth.

Bringing the core pattern again, NASA researchers wrote within the Nature paper, would allow them to analyze it with specialised, extremely delicate devices that may “decide the origin of the minerals, organics and textures it accommodates.”

Perseverance has collected 30 samples on Mars to date, based on NASA, with six empty tubes left unfilled. However the company continues to be engaged on a plan to carry them again.

NASA beforehand laid out plans to land a spacecraft carrying Martian specimens at a U.S. Air Pressure testing vary in Utah. However such a mission would value billions and take years to finish — and in Might, President Trump proposed cutting funding for the Mars Sample Return program, calling it “financially unsustainable.” Earlier this 12 months, the company stated it was weighing two totally different choices for easy methods to land and cargo the samples from Mars’ floor.

“We imagine there’s a higher approach to do that, a sooner technique to get these samples again,” appearing NASA Administrator Sean Duffy stated on Wednesday.

Duffy additionally stated that NASA stays dedicated to crewed missions exploring area, as a part of its scientific pursuits.

“So what we do on Mars,” he added, “these missions assist us in what we will do sooner or later as we do return to the moon and ultimately get to Mars.”



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