NASA may have met its match in a microscopic stowaway that shrugs off conditions meant to simulate Mars. Researchers found a fungus, Aspergillus calidoustus, lurking in NASA clean... NASA may have met its match in a microscopic stowaway that shrugs off conditions meant to simulate Mars. Researchers found a fungus, Aspergillus calidoustus, lurking in NASA clean rooms used to assemble Mars missions and put its spores through a puni... [1441 chars]