Astronauts Have Used Bacteria to Extract Useful Metals out of Rocks

History has viewed mining as a job that requires a lot of heavy machinery and physical labor.  Pulling valuable material out of the ground has been necessary for human progress for thousands of years.  That progress has led to an alternative method of getting those resources out of the Earth or other celestial bodies. The new technique relies on a symbiotic life partner that has co-habited with us for millennia – bacteria. A recent experiment conducted by ESA’s Biorock investigation team shows that this process – known as “biomining” – might be the most effective way to collect some materials in space.

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We’re About to Find Out How Well Biomining Works in Space

Mining is traditionally thought of as an activity that utilizes picks and shovels, or in more modern times, huge machines that can tear apart entire mountainsides in minutes.  Industrial might isn’t the only way to rip apart rock though.  A scalable and much more environmentally friendly way to access the materials mining seeks to extract is to use microbes.  Such techniques are already widely used in terrestrial mining operations.  But recently, a team led by the University of Edinburgh have launched an asteroid mining experiment using microbes on the International Space Station (ISS).

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