Join StarTalk’s Neil deGrasse Tyson to Explore Parallel Universes and the “Meta-Universe” (LISTEN)

 

  Star-talk

 

Join Neil deGrasse Tyson and theoretical physicist and cosmologist Paul Steinhardt as they explore concepts like cosmic inflation, quantum tunneling, and whether gravity is extra-dimensional. Neil and Paul discuss whether the perception of time would be consistent across the multiverse, and whether reality and gravity are granular. Find out about the difference between the Big Bang and the Big Bounce.


Compare the concept of parallel universes with that of an ekpyrotic “meta-universe” that had no singularity at its birth, where space and time have existed forever, and where quantum fluctuations at the start of this cycle have given birth to causally separated regions that, though they can never know about each other due to distance and the limitations of the speed of light, are nonetheless connected by the fabric of spacetime.

LISTEN HERE — Cosmic Queries: The Multiverse

 

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