Tech in space: Mars rover sees hints of past life in latest rock samples | Tech News

Tech in space: Mars rover sees hints of past life in latest rock samples

  • NASA's Perseverance Mars rover has detected its highest concentrations yet of organic molecules.

By:AFP
| Updated on: Sep 16 2022, 23:34 IST
Awesome NASA photo of Mars- Just check it out
Mars Rover
1/5 This amazing image of Mars with blue ripples reveals the secret of the red planet’s winds, says NASA. (NASA)
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2/5 NASA wrote in the image’s post ““There are tiny ripples on the tops of the dunes, only several feet from crest-to-crest. These merge into larger mega-ripples about 30 feet apart that radiate outward from the dunes. The larger, brighter formations that are roughly parallel are called "Transverse Aeolian Ridges" (TAR). These TAR are covered with very coarse sand”. (NASA)
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3/5 “All of these different features can indicate which way the wind was blowing when they formed. Being able to study such a variety so close together allows us to see their relationships and compare and contrast features to examine what they are made of and how they formed,” NASA further added. (NASA)
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4/5 According to NASA, the blue colour was not added for effect but had an important reason behind it. On the right side the ripples appear in blue-green color while on the left side, it appears in bright blue because the wind is blowing faster on the left side of the image and the TAR appears in bright color. On the right side, the slower moving wind gives it an ocean green color. (NASA)
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5/5 Just a month ago, NASA’s Mars Rover reported dust whirlwinds on Mars, known as Dust Devils. These whirlwinds got as big as 4 square kilometers and occurred multiple times a day. Therefore, to study the wind patterns, NASA added the blue colour to study the changing wind patterns on the red planet. (NASA)
Mars Rover
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The Mars rover Perseverance finds concentration of organic molecules. (NASA)

NASA's Perseverance Mars rover has detected its highest concentrations yet of organic molecules, in a potential signal of ancient microbes that scientists are eager to confirm when the rock samples are eventually brought to Earth.

While organic matter has been found on the Red Planet before, the new discovery is seen as especially promising because it came from an area where sediment and salts were deposited into a lake -- conditions where life could have arisen.

"It is very fair to say that these are going to be, these already are, the most valuable rock samples that have ever been collected," David Shuster, a Perseverance return sample scientist, told reporters during a briefing.

Organic molecules -- compounds made primarily of carbon that usually include hydrogen and oxygen, but also at times other elements -- are not always created by biological processes.

Further analysis and conclusions will have to wait for the Mars Sample Return mission -- a collaboration between NASA and the European Space Agency (ESA) to bring back the rocks that is set for 2033.

Nicknamed Percy, the rover landed on Mars' Jezero Crater in February 2021, tasked with caching samples that may contain signs of ancient life, as well as characterizing the planet's geology and past climate.

The delta it is exploring formed 3.5 billion years ago. The rover is currently there investigating sedimentary rocks, which came about from particles of various sizes settling in the then watery environment.

Percy cored two samples from a rock called "Wildcat Ridge," which is about three feet (one meter) wide, and on July 20 abraded some of its surface so it could be analyzed with an instrument called SHERLOC that uses ultraviolet light.

The results showed a class of organic molecules called aromatics, which play a key role in biochemistry.

"This is a treasure hunt for potential signs of life on another planet," NASA astrobiologist Sunanda Sharma said.

"Organic matter is a clue and we're getting stronger and stronger clues...I personally find these results so moving because it feels like we're in the right place, with the right tools, at a very pivotal moment."

There have been other tantalizing clues about the possibility of life on Mars before, including repeated detections of methane by Perseverance's predecessor, Curiosity.

While methane is a digestive byproduct of microbes here on Earth, it can also be generated by geothermal reactions where no biology is at play.

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First Published Date: 16 Sep, 23:34 IST
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