NASA logo, 100th debate logo, Jessie Cristiansen; Deputy Science Lead: NASA Exoplanet Archive (Caltech/IPAC); Research Scientist: NASA Exoplanet Science Institute; Ph D.: Astronomy: University of New South Wales

How will humanity first discover ET Life? Best guess: Biosignatures Most rocky, temperate real estate in our Galaxy seems to be around M dwarfs If those worlds are habitable, JWST could detect biosignatures in the next decade If these worlds are not habitable, HabEx/LUVOIR may detect biosignatures in more distant exoplanets in the next 2-3 decades

Image and Video Attributions Video 1: SYSTEM Sounds (M. Russo, A. Santaguida); Data: NASA Exoplanet Archive Video 2: NASA/JPL-Caltech Video 3: NASA/GSFC and Northrup Grumman Video 4: NASA/GSFC Conceptual Image Lab

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