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A potential presence of very salty water beneath the surface of Mars could mean that it contains enough oxygen to allow the microbes to breathe "even for simple animals like sponges," the researchers said. .
The study, published in NatureJones, was based on calculations and models.
"This is a major revolution in our understanding of the possibility of a present or past life on Mars," said Vlada Stamnikovic, researcher at NASA's Jet Propulsion Laboratory and senior author of l & # 39; study.
Due to the extreme scarcity of oxygen (about 1.45%) in the Martian atmosphere, scientists generally consider that the red planet is unable to house an environment containing enough of the same. oxygen to allow aerobic respiration.
This type of oxygen – based breathing is most prevalent on Earth through photosynthesis which allows the plant to release oxygen into the atmosphere.
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