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Analysis and Earth

NASA’s planetary protection officer will defend Mars, not Earth

A NASA job advert has made for excited headlines, but the agency isn’t hiring someone to protect us from aliens – it wants someone to protect alien microbes from us

By Leah Crane

3 August 2017

A NASA spacecraft

Cleared off all the hitch-hikers?

NASA

NASA wants to hire a new – but if you are dreaming of joining the Men in Black to defend Earth from alien attack, it’s probably not the job for you.

That’s because it’s not really Earth that needs protection, but everywhere else in the solar system. “Planetary protection is concerned with the avoidance of organic-constituent and biological contamination in human and robotic space exploration,” reads the . In plain English, it’s about microbes.

Any time NASA sends a spacecraft to another word, it runs…

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