As we've said, because it is cold, it may take millions of years for these molecules to form. So the possiblity that life forms as sophisticated as bacteria could presently live in this environment is remote. Nevertheless, over the age of the solar system, and because comets periodically migrate to the inner solar system and swoop around the sun, spilling portions of their surfaces in their wakes, it is thought that comets may have brought some of life's beginnings to the inner solar system where they could thrive.
Read more about this possibility by reading our life section. Read more about different sort of unsophisticated life forms found on the primordial Earth by taking the Exporatour of Life on Earth.
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