In this deep dive, we explore why Big Bang nucleosynthesis nails hydrogen and helium but stubs its toe on lithium. We examine how ancient metal-poor stars show far less lithium than theory predicts, and how hints from planet-hosting stars suggest a stellar 'blender' could be erasing lithium over billions of years. We'll outline three main explanations—stellar astrophysical mixing, new nuclear physics during the early moments, and exotic new physics beyond the standard model (dark matter decays, changing constants)—and discuss what these ideas could mean for our understanding of the cosmos and even for hunting hidden planetary systems.
Note: This podcast was AI-generated, and sometimes AI can make mistakes. Please double-check any critical information.
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