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Scientists Discover New Strong Bacteria That Could Help Us Find Aliens On Mars: What Is Chroococcidiopsis?

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Scientists revealed that a type of cyanobacteria called chroococcidiopsis absorbs low light and still produces oxygen. This organism can be used to help humans explore Mars.  ( NASA | Wikimedia Commons )

In order for humans to live on Mars, there needs to be a reliable source of oxygen. Although plants probably won't survive on the surface of Mars, another organism could work as an alternative.

What Did Scientists Discover About Bacteria On Earth?

Photosynthesis is the process used by plants and certain organisms that involves converting light and creating energy. This allows plants to convert carbon dioxide into oxygen.

Scientists just discovered a type of cyanobacteria called Chroococcidiopsis with a unique photosynthesis process. Unlike other organisms that require high-energy wavelenghts, this organism absorbs light at the far-red end of the electromagnetic spectrum. This is more efficient process because less light is used and it still creates oxygen.

The findings were published in the journal Science on June 15.

"Chlorophyll adapted to absorb visible light is very important in photosynthesis for most plants, but our research identifies the so-called 'red' chlorophylls as critical components in photosynthesis in low-light conditions," said co-author Jennifer Morton of the ANU Research School of Chemistry.

This bacteria has existed for millions of years. It has thrived in low-light areas like Antarctica, the Mojave Desert, and outside the International Space Station.

How Will Bacteria Help With Exploration On Mars?

Since this bacteria can surive in areas with low sunlight and still produce abundant oxygen, they can be used to create breathable air for humans exploring Mars. The red planet currently lacks an oxygenic atmosphere, and plants likely won't be able to surive there. Mars has plenty of carbon dioxide and low light levels, which is perfect for this bacteria.

"This might sound like science fiction, but space agencies and private companies around the world are actively trying to turn this aspiration into reality in the not-too-distant future," said Professor Krausz, a co-author on the study.

Mars is nearly 34 million miles farther from the sun than the Earth. This bacteria has proven that it doesn't need a lot of sunlight to survive. In addition, the radiation on Mars would require organisms that can survive under a rock, which this bacteria can do.

The process of searching for red chlorophylls, such as the pigments found in this bacteria, could also provide clues about where to find alien life on Mars. After all, extraterrestrial life on Mars would require a similar photosynthesis process in order to survive.

"Searching for the signature fluorescence from these pigments could help identify extraterrestrial life," Morton said.

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