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NASA to Outline Guidelines Protecting Earth from Alien Life Forms

© NASA . Ames Research CenterAn artist's conception of a human Mars base, with a cutaway revealing an interior horticultural area
An artist's conception of a human Mars base, with a cutaway revealing an interior horticultural area - Sputnik International
Space exploration agencies now and in the future face a tall challenge: protecting life on Earth from potential alien microbes and defending potential aliens against contamination from Earth, too

The Martian environment isn’t currently understood with any sort of detailed sophistication, which could pose threats to human missions to Mars, according to Catharine Conley, NASA’s planetary protection officer. For example, "bleach flying in the dust in Mars" could potentially be a human health hazard, Conley said in an interview with

"The benefit of having humans in space is that they’re much more flexible than robots, but they could contaminate Mars with Earth life," she said.

But astronauts will need to ensure that alien microbes are not brought back to earth where they might spread like wildfire. Just as important, though, is making sure microbes living in human environments don’t contaminate other worlds, either.

In this photo released by China's Xinhua News Agency, the sun sets above the Five-hundred-meter Aperture Spherical Telescope (FAST) in Pingtang County in southwestern China's Guizhou Province Monday, June 27, 2016 - Sputnik International
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Maintaining the scientific integrity of celestial samples from destinations like Mars will be vital to learning more about how the solar system formed—and perhaps even about the origin and evolution of life on Earth—leading NASA to release a report detailing 25 planetary protection knowledge gaps.  

The report details three primary areas where these gaps occur: The intersection of space-based microbes and human health, how contaminants traverse on Mars and from missions between Mars and Earth, and tools for controlling possible contaminations.

"The capabilities we are developing for people for the Asteroid Redirect Mission are good testbeds for ones we can develop for Mars," Conley said. 

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