astrobiology
study of the formation of life on Earth and elsewhere on other planets in outer space
exobiology
branch of astrobiology that deals with the possibility of life on other planets
astrobotany
applied sub-discipline of botany that is the study of plants in space environments
life on Titan
hypothetical possibility
Reports of Streptococcus mitis on the moon
Common bacterium found on Surveyor 3 lunar probe