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Blue-Green Algae Could Help Keep Humans Alive on Mars, Experiment Suggests

16 FEBRUARY 2021 Mars may not have a lot going on at the moment, life-wise, but the dusty red planet may not be as inhospitable as it seems. New experiments have shown that cyanobacteria (aka blue-green algae) can successfully grow in Martian atmospheric conditions.   A few more ingredients are required, of course, but it s a significant step towards cyanobacteria-based life support systems for human habitats when we finally make our way over there. Here we show that cyanobacteria can use gases available in the Martian atmosphere, at a low total pressure, as their source of carbon and nitrogen,  said astrobiologist Cyprien Verseux of the University of Bremen in Germany.

Bacteria bioreactor could make food and medicine for people on Mars

Bacteria bioreactor could make food and medicine for people on Mars Adam Smith © Provided by The Independent Scientists are developing bacteria that can be grown with only the local gases, water, and nutrients found on Mars, to make life on the Red Planet feasible. All species of the bacteria anabaena cyanobacteria can be used to produce oxygen through photosynthesis, while others can turn atmospheric nitrogen into nutrients on Earth. However, the challenge is that these bacteria cannot grow directly on Mars; the atmospheric pressure is less than one per cent of Earth’s, which is too low for liquid water, and the level of nitrogen gas is too low for the bacteria’s metabolism.

Blue-Green Algae Can Help Astronauts Survive on Mars

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