The types of microbes that they used were called hydrogenotrophs, and with these hydrogenotrophs, you can create a virtuous carbon cycle that would sustain life onboard a spacecraft.
Os tipos de micróbios que usaram foram chamados de hidrogenotróficos, e com eles, criaríamos  um ciclo de carbono virtuoso que sustentaria a vida  a bordo de uma espaçonave.