Pbs Space Time
Pbs Space Time
@pbsspacetime·3.5M subscribers·442 videos

What If Gravity Isn’t Quantum? New Experiments Explore

Posted

September 12, 2024

Views

601,366

Likes

20,595

Comments

1,374

Engagement

3.65%

Search the Record

Indexed

Every word spoken in this episode is indexed. Type any phrase to jump straight to the moment it was said.

Type any word or phrase that may have been spoken. Click a result to seek the player to that exact moment.

Try a name, a topic, or a quoted line

YouTube Description

as posted by the channel

👉 Head to for a 30day free trial + 20% off your annual subscription

Sign Up on Patreon to get access to the Space Time Discord!

If we discover how to connect quantum mechanics with general relativity we’ll pretty much win physics. There are multiple theories that claim to do this, but it’s notoriously difficult to test them. They seem to require absurd experiments like a particle collider the size of a galaxy. Or we could try to physics smarter, instead of physicsing harder. Let’s talk about some ideas for quantum gravity experiments that can be done on a non-galaxy-sized lab bench, and in some cases already have been done.

PBS Member Stations rely on viewers like you. To support your local station, go to

Check out the Space Time Merch Store

Sign up for the mailing list to get episode notifications and hear special announcements!

Search the Entire Space Time Library Here

Hosted by Matt O'Dowd

Written by Christopher Pollack, Lorenzo Braccini, & Matt O'Dowd

Post Production by Leonardo Scholzer, Yago Ballarini & Stephanie Faria

Directed by Andrew Kornhaber

Associate Producer: Bahar Gholipour

Executive Producers: Eric Brown & Andrew Kornhaber

Executive in Charge for PBS: Maribel Lopez

Director of Programming for PBS: Gabrielle Ewing

Assistant Director of Programming for PBS: John Campbell

Spacetime is a production of Kornhaber Brown for PBS Digital Studios.

This program is produced by Kornhaber Brown, which is solely responsible for its content.

© 2024 PBS. All rights reserved.

End Credits Music by J.R.S. Schattenberg

Space Time Was Made Possible In Part By:

Big Bang

​​Wojciech Szymski

First Principles Foundation

Bryce Fort

Peter Barrett

Alexander Tamas

Morgan Hough

Juan Benet

Vinnie Falco

Mark Rosenthal

Supernova

Grace Biaelcki

Glenn Sugden

Ethan Cohen

Stephen Wilcox

The Tyacke boys

Amy Hickman

Mark Heising

Hypernova

Richard Pavlicek

Dean Galvin

Michael Tidwell

Robert DeChellis

Stephen Spidle

Chris Webb

Justin Lloyd

David Giltinan

Kenneth See

Gregory Forfa

Alex Kern

drollere

Scott Gorlick

Paul Stehr-Green

Ben Delo

Scott Gray

Антон Кочков

Robert Ilardi

John R. Slavik

Mathew

Donal Botkin

Edmund Fokschaner

chuck zegar

Daniel Muzquiz

Gamma Ray Burst

John De Witt

Kevin Vallejo

Nathaniel Bennett

Sandhya Devi

Michael Oulvey

Robin Sur

Arko Provo Mukherjee

Mike Purvis

Christopher Wade

Anthony Crossland

Grace Seraph

Stephen Saslow

Tomaz Lovsin

Anthony Leon

Lori Ferris

Koen Wilde

Nicolas Katsantonis

Richard Steenbergen

Joe Pavlovic

Chuck Lukaszewski

Cole B Combs

Andrea Galvagni

Jerry Thomas

Nikhil Sharma

John Anderson

Bradley Ulis

Craig Falls

Kane Holbrook

Ross Story

Harsh Khandhadia

Matt Quinn

Michael Lev

Rad Antonov

Terje Vold

James Trimmier

Jeremy Soller

Paul Wood

Kent Durham

jim bartosh

John H. Austin, Jr.

Faraz Khan

Almog Cohen

Daniel Jennings

Jeremy Reed

David Johnston

Michael Barton

Isaac Suttell

Bleys Goodson

Mark Delagasse

Mark Daniel Cohen

Shane Calimlim

Tybie Fitzhugh

Eric Kiebler

Craig Stonaha

Frederic Simon

Tonyface

Jim Hudson

Alex Gan

John Funai

Adrien Molyneux

Bradley Jenkins

Vlad Shipulin

Justin Waters

Thomas Dougherty

Dan Warren

Joseph Salomone

Julien Dubois

Guests & Subjects Covered

Sign UpSpace Time Discord IfPBS Member StationsMatt O'Dowd WrittenChristopher Pollack Lorenzo BracciniMatt O'Dowd Post ProductionLeonardo Scholzer Yago BallariniStephanie Faria Directed

Sentinel Indexing in Progress

Metadata and chapters are available. Claim extraction for this episode is pending.

All video content is delivered via YouTube embedded players in accordance with the YouTube Terms of Service. Sentinel provides research tools that promote discovery and accountability across political media.

What If Gravity Isn’t Quantum? New Experiments Explore · Pbs Space Time · Sentinel