According to NASA's 2015 Astrobiology Strategy, "Life on other worlds is most likely to include microbes, and any complex living system elsewhere is likely to have arisen from and be founded upon microbial life.
Manut ring Strategi Astrobiologi NASA 2015, "kahuripan ring jagat tiosan minabang akéh marupa mikroba, miwah sistem kahuripan sané sampun kompleks ring genah tiosan minabang medal saking miwah madasar kahuripan mikroba.