Is there a multiverse?

The quest for a theory of everything – explaining all the forces and particles in the universe – is arguably the holy grail of physics. While each of our main theories of physics works extraordinarily well, they also clash with each other. But do we really need a theory of everyt ...  Show more

What’s the difference between a living collection of matter, such as a tortoise, and an inanimate lump of it, such as a rock? They are, after all, both just made up of non-living atoms. The truth is, we don’t really know yet. Life seems to just somehow emerge from non-living part ...  Show more

Physics, while absolutely fascinating, can be impenetrable. And it isn't just cutting-edge ideas that can melt our brains, often we accept basic principles and ideas without really knowing how they work or even what they are. This week, Jonathan is joined by Sean Carroll, physi ...  Show more

Brian Cox and Robin Ince are joined by actor and writer Mark Gatiss, theoretical physicists Carlo Rovelli and Fay Dowker to ask timely questions about time. Is time real, does it exist in the fundamental laws of physics, and if it doesn't, why do we experience the sensation of ti ...  Show more

Can a whole universe fit inside a black hole? Neil deGrasse Tyson and Paul Mecurio explore grand unification, dark matter, wave function collapse, and other problems in physics with theoretical physicist and author of “Existential Physics,” Sabine Hossenfelder. 

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The Fundamentals of RealityBrian Cox and Robin Ince are joined by Nobel prize-winning physicist Frank Wilczek, cosmologist Janna Levin, and comedians Eric Idle and Sara Pascoe to look at what physics has revealed about the reality of our universe. From Einstein's equations more t ...  Show more