The tiny organisms may have inadvertently brought along their own demise.
along fissures in the ocean floor and can support entire ecosystems that are adapted to living with crushing water pressures, near-freezing temperatures, and total darkness.
However, so much hydrogen being sucked out of the thin and carbon dioxide-rich atmosphere would have put the planet’s protective layer in jeopardy. As the amount of hydrogen in the atmosphere depleted, the temperature on the planet plummeted and any of the microbes at or near the Martian surface probably would have gone deeper in an attempt to survive.
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