Could bringing back samples of Martian rock contaminate the Earth with foreign microbes? - BBC Science Focus Magazine

NASA and ESA plan to bring back samples or rock, soil and air from the Red Planet within the next two decades.

NASA and the European Space Agency (ESA) are teaming up to return a sample of Martian material to Earth in the 2030s, but that has provoked fears in some quarters that we could be bringing back more … [+4696 chars]

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