27 | Janna Levin on Black Holes, Chaos, and the Narrative of Science

Episode Summary

Executive Summary: Sean Carroll and Jana Levin discuss her scientific path from abstract relativity and black-hole chaos to real astrophysical discoveries, and how those interests shaped her narrative-style science writing. The conversation centers on her books, especially Black Hole Blues, and on why stories, humility, and human context can make science more meaningful and accessible.

Main Topics: Levin's scientific trajectory (Priority: 5/5): Levin explains how she moved from late-blooming interest in physics to graduate work on alternative gravity, spacetime, cosmology, and black holes, emphasizing that her strongest work emerged later when she felt less constrained by others' expectations. Chaos, relativity, and black-hole dynamics (Priority: 5/5): She describes research on chaos in curved spacetime, including observer-independent fractal structures in black-hole orbit problems and how chaotic behavior must be defined in a relativistically invariant way. From abstract black holes to astrophysical reality (Priority: 4/5): Levin reflects on wanting predictions that could be verified in nature, which led her toward real black holes, magnetic fields, and the possibility of astrophysical circuits around black holes. Narrative as a scientific writing strategy (Priority: 5/5): Levin argues that science writing works best when shaped as story rather than exposition, because structure and voice matter as much as content; she often has to write the 'wrong book' first before finding the right form. Turing, Gödel, and the limits of knowledge (Priority: 4/5): They discuss her novel about Alan Turing and Kurt Gödel, whose work exposed fundamental limits on computation and proof; Levin explains why a novel was a better way to express truths that exceed formal systems. Black Hole Blues and the LIGO discovery (Priority: 5/5): Levin recounts embedding herself in the LIGO collaboration, capturing the long, uncertain search for gravitational waves and the eventual detection of black-hole mergers, while maintaining the suspense of an experiment that might have failed. Pioneer Works and public science culture (Priority: 4/5): Levin closes by describing her role in building science programming at Pioneer Works in Red Hook, where scientists present high-level talks in a welcoming, social environment that helps dissolve barriers between science and the public.

Key Arguments: Physics is most compelling when it is treated as a shared tool for understanding reality, not as a closed set of facts. Relativity and chaos require invariant descriptions; interesting scientific quantities should be meaningful to all observers. The best science writing often depends on narrative structure, not just accurate exposition, because stories capture how scientific work actually unfolds. Science is emotionally meaningful: understanding the universe through math is a source of wonder rather than despair. Telling the story of science in progress, including failure and uncertainty, is more honest and more engaging than a polished retrospective. LIGO’s success mattered because it transformed a once-skeptical, technically daunting project into a genuine observation of the universe. Public science events work when they feel like they belong to everyone, rather than being formal lectures delivered from on high.

Data Points: LIGO initial operation year: 2000 - Levin notes the first-generation instrument was running by 2000 but was not yet sensitive enough to detect gravitational waves. LIGO discovery year: 2015 - She refers to the black holes whose merger produced the first detected gravitational waves as colliding in 2015. Years Ray Weiss worked on LIGO: About 50 years - Levin estimates Weiss spent roughly half a century on the project from early prototypes to discovery. Prototype size: About 1.5 meters - She describes Weiss’s early tabletop LIGO prototype as far smaller than the later observatory. LIGO arm length: 4 kilometers - The final observatory she discusses is a kilometer-scale interferometer with 4 km arms. Mirror displacement sensitivity: Less than one ten-thousandth the width of a proton - Levin cites the extraordinary precision needed to detect gravitational-wave signals. Pioneer Works access: Free and open to the public - She emphasizes that the science events are designed to feel accessible and community-owned.

Pivotal Quotes: "We love her. She does not love us back." — Jana Levin: On the indifference of nature and why scientific inquiry is both emotionally rewarding and humbling. "Physics is about not knowing." — Jana Levin: Her explanation of why uncertainty, process, and discovery are central to both physics and her writing. "If we do not detect black holes, this thing is a failure." — Jana Levin: Ray Weiss’s candid assessment of LIGO’s stakes before the first detection, illustrating the project's uncertainty.

Implications: Levin’s approach suggests science becomes more compelling when uncertainty, personality, and process are foregrounded. For readers and audiences, narrative can make advanced physics feel humane, accessible, and culturally shared.