What if bacteria left Mars billions of years ago... and came back? In this clip from IRH 268, Jake breaks down a wild thought experiment sparked by a real Johns Hopkins study — bacteria so tough it survived pressures that broke the equipment. What happens when that kind of organism gets stuck on Mars, can't replicate, and then a meteor sends it back to Earth after a billion years? We'd have zero frame of reference for what we were looking at.
This is part of our deep dive into panspermia — the scientific theory that life may have traveled between planets, and that life on Earth might have Martian origins.
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