Cryomyces minteri

Cryomyces minteri is a fungus of uncertain placement in the class Dothideomycetes, division Ascomycota. The rock-inhabiting fungus that was discovered in the McMurdo Dry Valleys located in Antarctica, on fragments of rock colonized by a local cryptoendolithic community.
In 2008, Cryomyces minteri and Cryomyces antarcticus were simultaneously tested in low Earth orbit conditions on the EXPOSE-E facility on the European [Technology Exposure Facility|EuTEF] platform outside the International [Space Station] for 18 months.
It was also tested in a space vacuum along with polychromatic UV radiation to simulate a Martian environment. The two fungi survived both of the simulations.