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TagBiosignatures

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Close encounters of the third kind. Unidentified objects coming from space. Contact with extraterrestrials UFO.

NASA Seeks Standards for ET Life Claims

The agency wants to develop a credibility scale so we know what to pay attention to

What with everything from Oumuamua to phosphine on Venus claiming our attention, NASA thinks it’s time to develop some standards for what constitutes a credible claim about extraterrestrial life: “The discovery of a potential biosignature in [a planet’s] atmosphere is important, but it’s just the start,” said Green in an interview. “You have to examine potential false positives, whether there are [non-biological] ways to form the chemical, whether the measurement is an artifact of your instrument, whether the environment on the planet is conducive or hostile to life, whether water is present.” Applying such a chain of reasoning could result in a kind of credibility scale for the general public to turn to when they read about new results in…