Bacteria may mutate more rapidly in space and scientists theorize patterns of those mutations could help predict how pathogens become resistant to antibiotics. Such predictions could, in turn, be used to develop new drugs to use against those pathogens. Antibiotic resistant pathogens or bacteria is a growing world-wide health concern. The long-term use of many common antibiotics has led to some diseases becoming resistant to drug therapy, which can lead to longer and more complicated illnesses.