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methanogens

My research Q is Does alien life exist out there and how would it live in space?

The Viking Lander found a meteorite with bacteria on mars. This means there is at least micro life in space.

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Recently some new residents were discovered in Idaho. They consume hydrogen, breathe carbon dioxide and belch methane, so there goes the neighbourhood. They are tiny organisms called Methanogens and they live in the earth's crust 660ft below the (Idaho) surface.Their discovery is extremely significant because they survive without the need for sunlight or oxygen. They may be exactly the type of life we should look for when we send probes to Mars.

I got this from http://www.astrocentral.co.uk/life.html