The Quantum Rival to String Theory - Ask a Spaceman!

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Why do we care about loop quantum gravity? Is it a viable path to uniting quantum mechanics and general relativity? What does it mean for spacetime to be discrete? I discuss these questions and more in today’s Ask a Spaceman!

Follow all the show updates at http://www.askaspaceman.com, and help support the show at http://www.patreon.com/pmsutter!

Keep those questions about space, science, astronomy, astrophysics, and cosmology coming to #AskASpaceman for COMPLETE KNOWLEDGE OF TIME AND SPACE! Music by Jason Grady and Nick Bain.

00:00 Background Independence
05:34 Quantum Nature of Spacetime
10:48 Consequences of Loop Quantum Gravity
15:33 Issues with Loop Quantum Gravity
19:15 Strengths of Loop Quantum Gravity