Scientists Found a Hidden “Oasis” Two Meters Below Earth’s Driest Desert
The Daily Galaxy • • science
Key Points:
- A microbial ecosystem discovered two meters beneath Chile’s Atacama desert challenges previous assumptions about life’s survival, suggesting that potential Martian life may also exist underground rather than on the surface.
- The Atacama desert, known for its extreme dryness and salt-rich soils, serves as a terrestrial analog for Mars, making it a crucial site for astrobiology research focused on subsurface life.
- Scientists, led by Victor Parro, found bacteria, archaea, and DNA at depths much greater than previously known, revealing a subsurface “oasis” where microorganisms survive on microscopic water films formed on salt crystals.
- The study utilized the SOLID (Signs of Life Detector) instrument, which detects biological molecules using antibodies, demonstrating its effectiveness in identifying biosignatures in deep soil samples and supporting its use in future Mars missions.
- Given Mars’ harsher conditions, including intense radiation and low temperatures, researchers believe that searching for life on Mars’ surface is unlikely to succeed, shifting exploration efforts toward subsurface environments.
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