How did the Universe begin? What made it expand from the size of a grapefruit to billions of lightyears across in a fraction of a second after the Big Bang? And why did it stop? And is ours the only Universe? We ask cosmologists Hiranya Peiris and Matt Johnson.

Big Science: What's the Big Idea? From Resonance FM

Big Science FM: Multiverses and the Big Bang

Big Science FM began as an experiment borne of a belief that the laws that govern the Universe are simple. Fantastical, astonishing, often unbelievable, but ultimately comprehensible to anyone who wants to understand. For an hour each week, Dr Ed Gerstner and guests explore the ideas that make the Universe tick.

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Big Science: What's the Big Idea? From Resonance FM