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posted by mrpg on Saturday February 24 2018, @11:20AM   Printer-friendly
from the sounds-like-a-sci-fi-movie-plot dept.

NASA's Planetary Protection Officer has suggested that it's time to contaminate Mars slightly aggressively before humans arrive with their microbiomes in tow:

Is there life on the surface of Mars? The clock is ticking on scientists' window to solve that long-standing question before astronauts—and the microbes that live on them—contaminate the planet. Today, at a meeting in Washington, D.C., of NASA's planetary science advisory committee, the agency's new planetary protection officer raised the possibility of opening up a few of the planet's most promising regions to more aggressive exploration.

Just a few weeks into the job, Lisa Pratt, formerly a geomicrobiologist at Indiana University in Bloomington, has signaled that she wants the office to be open to the notion that a degree of contamination might be necessary to explore several of the planet's most habitable spots. Previously, the office has served as a watchdog to prevent the contamination of Mars and other planets with microbes from Earth, and vice versa. But now, time is pressing, given NASA's long-term goals, Pratt says. "No matter what we do, the minute we've got humans in the area we've got a less pristine, less clean state," Pratt said at the meeting. "Let's hope we know before the humans get there, one way or the other, if there is an ecosystem at or near the surface."

Although no region of Mars is banned for exploration, international treaties set the allowable levels of microbial contamination on robotic spacecraft destined for other planetary environments. Some scientists say it is too costly to meet the sterilization requirements to explore the potentially warm and wet "special regions" on Mars that are most likely to harbor microbes. Only the 1970s Viking landers achieved the cleanliness necessary to explore a special region. A growing number of scientists have argued that the agency needs to rethink its plans, as Science reported last year.

Related 2013 paper: The overprotection of Mars (DOI: 10.1038/ngeo1866) (DX)

Previously: NASA Posts Planetary Protection Officer Job Position


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  • (Score: 2) by AthanasiusKircher on Saturday February 24 2018, @04:41PM (1 child)

    by AthanasiusKircher (5291) on Saturday February 24 2018, @04:41PM (#643064) Journal

    Some shit about the spaceships have to be extra clean or something. Are they fucking OCD or what?

    Well, I'm not sure how OCD they are if the reporting is accurate. From the Science reported linked in TFS from last year:

    The office has clashed in recent years with the Jet Propulsion Laboratory (JPL) in Pasadena, California, which assembled Curiosity. JPL baked parts of the rover in ovens at 110°C for nearly a week, to sterilize them to a level where the rover could explore special regions. But in 2011, weeks before launch, JPL engineers decided that Curiosity should launch with one of its drill bits mounted on its robotic arm. They opened the already-sterilized bit box, a violation of planetary protection protocols that caused the office to downgrade Curiosity’s sterility. During postmortems, JPL engineers complained about the confusing and vague way the offices [in charge of sterilization protocols] presented its requirements.

    (emphasis added)

    Hmm... perhaps this paragraph is just poorly written, but it actually ends up sounding like the parent's tongue-in-cheek post. They went to a great deal of trouble to sterilize the thing for a week, then JPL engineers opened the sterilized box, and then complained about "the confusing and vague way the offices presented its requirements." The implication is that the JPL engineers were complaining about the downgrade in sterility after they opened the already sterilized box.

    That doesn't sound like OCD to me -- from the description, it sounds like people who just thought they'd get away with doing something that any idiot would understand would completely undermine a previous sterilization procedure. "Oh, I know that sealed package of sterile gauze is destined for surgery, but the team of nurses just went ahead and opened it to put a happy-face sticker on the interior of the package to cheer up doctors in the middle of a long procedure. I don't understand the 'vague and confusing' regulations about sterilization -- why can't we still use the gauze for surgery?"

    Of course, I may be misreading this. Perhaps there were other complaints. but this paragraph makes it sound like an obvious breaking of sterilization protocol led to complaints regarding a downgrade in sterility.

    NOTE: Perhaps the interplanetary sterilization guidelines are overkill. I don't know. But it seems pretty clear that if you open a sterilized box and mess with the contents, it's going to become less sterile and should be considered so.

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  • (Score: 2) by AthanasiusKircher on Saturday February 24 2018, @04:51PM

    by AthanasiusKircher (5291) on Saturday February 24 2018, @04:51PM (#643070) Journal

    On second thought, the article doesn't mention the exact conditions under which they opened the sterilized box. Perhaps there is more to the story and the engineers thought they were following adequate protocols if they did it in a very controlled environment or something. The text of that paragraph is vague though and makes the JPL engineers sound like a bunch of whiners who couldn't follow basic instructions and/or thought they'd "get away with" an obvious break in protocol.

    (And, you know, I probably should give NASA engineers the benefit of the doubt. Except for the fact that in 1999, NASA lost the $125 million Mars Climate Orbiter because somebody forgot to convert feet to meters...)