A team of space scientists at NASA has published a Perspective piece in the journal Nature calling for the establishment of a methodical approach to identifying life beyond Earth. In their paper, the group suggests the space science community begin using a “confidence of life detection” (CoLD) scale, similar in some respects to others used in the science community, such as the TRL scale NASA uses to chart the readiness of new technology to be used on missions.
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Source: Phys.org