In a relatively short period of time, exoplanets (planets around stars other than our Sun) have gone from an intriguing conjecture to an active field of scientific study, with over 5,000 confirmed discoveries. The task now is to move beyond merely accumulating new examples, and embarking on systematic studies of their properties. What fraction of stars have planets, how are they distributed in size and distance, what kinds of atmospheres do they have, are any promising homes for life? I talk with Natalie Batalha about what we've learned so far, and prospects for future discoveries. Blog post with transcript: <a href= "https://www.preposterousuniverse.com/podcast/2025/08/25/326-natalie-batalha-on-what-we-know-and-will-learn-about-exoplanets/" rel="noopener noreferrer" target= "_blank">https://www.preposterousuniverse.com/podcast/2025/08/25/326-natalie-batalha-on-what-we-know-and-will-learn-about-exoplanets/</a> Support Mindscape on <a href= "https://www.patreon.com/seanmcarroll" rel="noopener noreferrer" target="_blank">Patreon</a>. Natalie Batalha received a Ph.D. in astrophysics from the University of California, Santa Cruz. She is currently a professor of astronomy and astrophysics at UCSC. She has served as Science Team Leader, Mission Scientist, and Project Scientist for NASA's <a href="https://en.wikipedia.org/wiki/Kepler_Mission" rel="noopener noreferrer" target="_blank">Kepler</a> satellite observatory. She is a member of the American Academy of Arts and Sciences, and was listed as one of Time Magazine's 100 Most Influential People in the World in 2017. <ul> <li><a href= "https://astrobiology.science.ucsc.edu/people/natalie-batalha/" rel="noopener noreferrer" target="_blank">Web page</a></li> <li><a href= "https://scholar.google.com/citations?user=Hgd4_vYAAAAJ&hl=en" rel="noopener noreferrer" target="_blank">Google Scholar publications</a></li> <li><a href="https://en.wikipedia.org/wiki/Natalie_Batalha" rel= "noopener noreferrer" target="_blank">Wikipedia</a></li> </ul>

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326 | Natalie Batalha on What We Know and Will Learn About Exoplanets

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