What would it take to say? "We found life beyond Earth." | We Asked a NASA Expert
Before NASA scientists make that claim, they have to be absolutely sure, from ruling out contamination to spotting chemical signals. Watch as a NASA expert explains how scientists would actually confirm evidence of life and why the bar is astronomically high.
With a background in chemistry and oceanography, Tori Hoehler studies microbial ecosystems on Earth to inform how we will seek evidence of life beyond Earth. His research combines geochemical and biochemical perspectives to understand how energy availability shapes habitability and impacts the nature, abundance, and quality of evidence for life.
Tori Hoehler's Biography: https://www.nasa.gov/people/tori-hoehler/
Producers: Scott Bednar, Pedro Cota, Jessie Wilde
Editor: Pedro Cota
Duration: 3 minutes, 27 seconds
Release Date: Sept. 10, 2025
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