NASA scientists call for new framework in search for alien life
Fox News
The scale presented contains seven levels that NASA said are "reflective of the winding, complicated staircase of steps that would lead to scientists declaring they’ve found life beyond Earth."
The group said that creating a scale for evaluating and combining different lines of evidence would help to provide context for findings related to the search for life.
Additionally, the scientists offered a sample scale as a starting point for discussions among anyone who would use it – though they envision one informed by decades of experience in astrobiology.
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