Microbial growth in simulated Mars conditions could guide search for life
A new experiment reveals that Earth's microbes can grow in harsh conditions similar to what may exist just below the surface of Mars, suggesting new directions in the search for potential cellular life on the red planet.
Researchers have discovered that Earth's microbes can thrive in conditions on Mars that are similar to what may exist just below the planet's surface. Led by University of Florida scientist Adam Robinson, the study tested a salt-loving microorganism called Haloferax volcanii. The microbe was exposed to low pressure, high salt concentrations, and chemicals similar to bleach for 160 days.
While growth was slower than expected, the microbes still managed to reproduce and use surrounding chemicals to sustain their metabolism. This finding suggests that future Mars missions should consider whether certain subsurface environments could support active life, rather than focusing solely on evidence of past life. The researchers caution that the conditions mimicked in the lab are not exactly what is found on Mars, but the results still offer valuable insights for designing life-detection experiments and reducing the risk of contaminating Mars with Earth microbes.
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