0 a liquid substance that existed on earth before there were any plants, animals, or humans and from which plants, animals, and humans developed --
Another method proposed to create a protocell more closely resembles the conditions believed to have been present during evolution known as the primordial soup.
They apparently evolved from primordial soup, and over the course of millions of years, become a space-faring species.
These now classic experiments provided an empirical base for the primordial soup model, displacing panspermia in mainstream scientific theory.
