When and if we discover extraterrestrial life, the handling of the news will be interesting. Recall the tumultuous media circus following the announcement in the movie Contact. Carl Sagan knew a little about dealing with the press, and the film version gets across what might happen when you start broadcasting public fear and fascination through a cable TV and Net-connected world. Or think of the recent rumblings when the SETI Institute said it was about to make a ‘major announcement,’ which turned out to be business related and not extraterrestrial at all.

And in point of fact, we do have one actual experience of trying to announce extraterrestrial life. That was in 1996, when a team of researchers had submitted a paper, subsequently accepted, to Science. The contents were dynamite, for the authors proposed that the Antarctic meteorite ALH84001 might be evidence of life on Mars. The team had studied four potential biomarkers within the meteorite, which had earlier been determined to be of Martian origin, and the circus soon began.

NASA scheduled a news conference, aware of the public interest that must follow, even though the evidence for life was equivocal at best. But a member of the White House staff spilled the beans to his girlfriend about the upcoming Science story, so the word had already leaked. Add to that the fact that a prepublication version of the story was given to the press earlier than planned. The result: hoping to avoid being scooped, a number of news outlets started distributing the paper to get quotes from experts to bolster their upcoming stories. The work on ALH84001 thus began its journey from interesting paper to ‘discovery.’

Today we have no definitive take on the Martian meteorite, but the fact that there are alternative explanations to the possible biomarkers leads many to doubt their validity. Whatever the case, contrast this situation — researchers working in strict secrecy until the press sniffs out their forthcoming paper — to what may happen with a Mars sample return mission. The scientists who work on the first samples will be operating from the start under public scrutiny, looking both for biohazards and for evidence of life while under pressure to work quickly.

What that calls for, in the eyes of John Rummel (Science Mission Directorate, NASA Headquarters) and Margaret Race (SETI Institute) is a communications plan that has been thought through in advance and will anticipate any outcome. Their recent paper suggests how such a sample receiving facility (SRF) might operate, with dialog involving NASA, policy makers, international partners and teams of experts:

In order to provide for a successful SRF activity, risk management and planetary protection information will have to be balanced with a program of education and outreach, from the scientific perspective, that will focus on the anticipated benefits of Mars exploration and of returning a sample from Mars — while not neglecting the uncertainties associated with the biological potential of Mars. In order to take a comprehensive approach even further, a Mars SRF communication plan must also address how, when, and where the public and scientific community will be informed of results and findings that occur during both the life detection and biohazard testing of the sample. Such information should be structured to properly put it into context, while it also may be delivered without context — in the raw — as a more or less continuous stream, similar to the recent practice of NASA solar system exploration missions.

And that last point bears watching. We know that bringing extraterrestrial life to light will draw intense public interest. The ability of any government agency to contain the outcome in the face of live streaming of data via the Net is questionable. Even as Martian samples are first being examined, various media outlets will be announcing rumor-based results in hopes of positioning themselves ahead of the pack. How well have we thought through the impact of an unequivocal finding of life on another world, even single-celled life? NASA is thinking hard about this, and that’s an indication that Mars remains very much in play as a potential home to some kind of exobiology.

The paper is Rummel and Race, “Got Life? Hours of boredom followed by moments of sheer terror (and that’s just with the press),” in Acta Astronautica 59 (2006), pp. 1160-62. A NASA draft protocol on all this is Rummel, et al. (Eds.), A Draft Test Protocol for Detecting Possible Biohazards in Martian Samples Returned to Earth (NASA/CP-2002-211842), 2002.