Space.com July 20, 2026 • 12:00

Did Viking 1 find life on Mars 50 years ago? Here's why the debate continues - Space

By Leonard David

Did Viking 1 find life on Mars 50 years ago? Here's why the debate continues - Space

"Viking more likely than not found autotrophic microbial life on Mars, roughly 1,000 cells per gram."

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