Most life on Earth is microbes. we've only just scratched the surface of the microbial realm. Probably less than .1% of microbes have been classified let alone cultured or had their genes sequenced, so really that microbial realm is a mystery. — Paul Davies Copy Share Image
“It turns out that a number of species of Earth microbes can survive and grow in conditions of Martian temperature, pressure, atmospheric composition, and solar irradiance.” — Jon Willis Copy Share Image
