Black holes are usually the aftermath of dying stars—but what if some black holes are far older than stars, galaxies, or even atoms? In this episode, we explore primordial black holes, hypothetical objects that may have formed within the first second of the universe. Discover how density fluctuations, cosmic inflation, and quantum effects could have created these cosmic fossils, and why they might hold clues to dark matter, Hawking radiation, and the origin of structure in the cosmos.

We discuss the potential mass range of primordial black holes, how they differ from stellar black holes, and the observational searches that could reveal them—from gravitational lensing and gamma-ray backgrounds to gravitational waves. Whether they exist or remain theoretical, primordial black holes challenge our understanding of the universe and provide a window into the earliest moments of time.

Join us as we navigate the science, controversy, and wonder surrounding these ancient cosmic enigmas.

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