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NASA’s Viking Mission Could Have Destroyed Martian Life with Water Experiments

by Staff Reporter
November 19, 2024
in Tech
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NASA’s Viking Mission Could Have Destroyed Martian Life with Water Experiments
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In 1975, NASA’s Viking programme made historical past when its twin landers turned the primary American spacecraft to efficiently attain the floor of Mars. These landers carried out pioneering experiments, accumulating and analysing Martian soil samples for over six years in a quest to find out whether or not microbial life existed on the Red Planet. However, a provocative new idea means that the very strategies utilized in these experiments might have unintentionally killed potential life on Mars.

Life Detection Methods Under Scrutiny

Dirk Schulze-Makuch, an astrobiologist on the Technische Universität Berlin, has proposed that the Viking experiments might need encountered Martian microbes however destroyed them by introducing liquid water. In a commentary printed in Nature Astronomy, Schulze-Makuch argued that Mars’ hyperarid setting, drier than Earth’s Atacama Desert, doubtless harbours lifeforms tailored to extract moisture from salts within the ambiance. These organisms, if current, could possibly be fatally overwhelmed by the addition of liquid water, as used within the Viking experiments.

Misguided Assumptions About Water

The Viking programme assumed that Martian life, like life on Earth, would rely upon liquid water. The experiments added water and vitamins to the soil samples, monitoring for metabolic reactions. While preliminary outcomes confirmed potential microbial exercise, they have been later dismissed as inconclusive. Schulze-Makuch believes these findings would possibly as an alternative point out the destruction of lifeforms tailored to Mars’ arid circumstances. He has advised adopting a “follow the salts” technique, which focuses on detecting organisms thriving in salt-driven moisture environments.

Shifting the Search for Life

Highlighting parallels with Earth’s deserts, Schulze-Makuch pointed to proof of microbes in salt-rich areas surviving by a course of known as deliquescence, the place salts take up moisture to create brines. His proposal requires a number of life-detection strategies, together with AI-assisted motility evaluation and superior microscopes, to keep away from counting on water-based assumptions.

This idea challenges NASA’s longstanding strategy of trying to find water as the important thing to extraterrestrial life, urging a broader exploration technique. While controversial, it opens a essential dialogue about refining strategies to uncover life on Mars.

 

Tags: astrobiologydestroyeddid nasa’s viking mission kill mars life? nasaExperimentsLifelife on marsmarsMartianmartian lifemicrobial lifeMissionNASAsspace explorationVikingviking missionWater
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