Oct 20, 2026 · 41 min
Levin and Tyson test physics against nature’s surprises
In Theory with Janna Levin
The conversation examines how far theory can reach beyond observation while remaining disciplined by evidence and established results.
- 1The multiverse broadens humanity’s cosmic displacement, but its possible meanings range from interacting universes to unreachable realities.
- 2Scientific theories evolve by extending successful older frameworks, as quantum gravity would need to preserve relativity’s tested predictions.
- 3Wormholes and extra dimensions reveal how conjecture can inspire physics without becoming evidence-backed law.
Don't miss
Levin and Tyson revisit how Schwarzschild derived the black-hole solution even as Einstein doubted black holes could form.
The brief
Janna Levin and Neil deGrasse Tyson open with a deceptively simple question: does nature eventually realize every possibility that physics permits, or only some of them?
Their answer unfolds through humanity’s repeated loss of cosmic centrality, from Earth to a universe of planets and perhaps multiple universes with radically different meanings.
Black holes become the sharpest example of nature outrunning intuition: Karl Schwarzschild found the mathematical solution, while Einstein doubted such objects would form.
The discussion then turns to theory’s rules: newer frameworks must recover tested older ones, and quantum uncertainty can be precisely calculated without becoming philosophically comfortable.
Wormholes, extra dimensions, and chronology protection remain fertile conjectures rather than established facts, demanding imagination without abandoning evidence.
Levin and Tyson close by rejecting elaborate explanations built around uncertain observations, defending theoretical physics as ambitious but accountable speculation.
Books & mentions
Some links are affiliate links — PodLume may earn a commission if you buy.
Weekly email
State of the Pod, every Monday
The week's most-discussed names and stories from podcasts, with the moments behind them. Free, five minutes, unsubscribe in one click.