Astrobiology is Considered a Sub-Discipline of Microbiology Because _______

Question

Astrobiology is considered a sub-discipline of microbiology because _______.
A) all extraterrestrials known are microbial
B) life elsewhere in the universe is likely to be microbial
C) only microbes can reproduce under the extreme conditions in outer space
D) microbes are known to exist on other planets

Accepted Answer

Astrobiology is considered a sub-discipline of microbiology primarily because it is hypothesized that if life exists elsewhere in the universe, it is most likely to be microbial in nature, given the extreme conditions of many extraterrestrial environments. This assumption is based on our understanding of life's resilience and adaptability, particularly in microbes on Earth.