NASA scientists propose new 'alien life evidence' scale

As the search for extraterrestrial life heats up, scientists may need to step up their reporting game a bit. Researchers should report evidence for alien life on a scale similar to the technological readiness level scale commonly used to assess the readiness of spaceflight components, a new paper argues. The goal is to make the search for life less "binary" — life or no life — and to express it more accurately in terms of agreed-upon scientific uncertainty.
Read more: https://www.space.com/alien-life-evidence-scale-proposed?source=Snapzu