NASA is bringing rocks back from Mars, but what if those samples contain alien life?
NASA and the European Space Agency are gearing up to bring home a pristine sample of Martian rock. But given the small chance of life on the red planet, they have to grapple with safety questions.
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Science - May 4, 2022 at 04:00PM - NASA is bringing rocks back from Mars, but what if those samples contain alien life?
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