- Mars Opportunity rover photo “evidence strongly supports the hypothesis that mushrooms, algae, lichens, fungi, and related organisms have colonized the Red Planet and may be engaged in photosynthetic activity and oxygen production on Mars.” https://www.researchgate.net/publication/340610633_life_on_mars_colonies_of_photosynthesizing_mushrooms_in_eagle_crater_the_hematite_hypothesis_refuted 5 comments science