Show Notes
Head to https://brilliant.org/Spacetime/ to start learning for free for 30 days. Plus, our viewers get 20% off an annual Premium subscription for unlimited daily access to everything Brilliant has to offer.
To progress to the next level in understanding reality, we need to combine quantum mechanics and Einstein’s general relativity. And to do that, most physicists believe we need a theory of quantum gravity .. which means we need gravitons. But it also seems like the laws of physics make it impossible to ever detect this quantum particle of gravity. Almost like the universe is set up to keep the final answer forever out of our reach. So, can we outsmart the universe, catch a graviton, and finally solve physics?
Sign Up on Patreon to get access to the Space Time Discord! https://www.patreon.com/pbsspacetime
Check out the Space Time Merch Store https://www.pbsspacetime.com/shop
Sign up for the mailing list to get episode notifications and hear special announcements! https://mailchi.mp/1a6eb8f2717d/spacetime
Search the Entire Space Time Library Here: https://search.pbsspacetime.com/
Hosted by Matt O'Dowd Written by Richard Dyer & Matt O'Dowd Post Production by Leonardo Scholzer Directed by Andrew Kornhaber Associate Producer: Bahar Gholipour Executive Producer: 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. © 2025 PBS. All rights reserved.
End Credits Music by J.R.S. Schattenberg: https://www.youtube.com/user/MultiDroideka
Space Time Was Made Possible In Part By:
Big Bang Alexander Tamas David Paryente Juan Benet Kenneth See Mark Rosenthal Morgan Hough Peter Barrett Santiago Tj Steyn Vinnie Falco
Supernova Ethan Cohen Glenn Sugden Grace Biaelcki Mark Heising Stephen Wilcox Tristan Lucian Claudius Aurelius Tyacke
Hypernova Alex Kern Ben Delo Cal Stephens chuck zegar David Giltinan Dean Galvin Donal Botkin Gregory Forfa Jesse Cid Dyer John R. Slavik Justin Lloyd Kenneth See Massimiliano Pala Michael Tidwell Mike Purvis Paul Stehr-Green Scott Gorlick Scott Gray Spencer Jones Stephen Saslow Thomas Mouton Zachary Haberman Антон Кочков Daniel Muzquiz
Gamma Ray Burst Aaron Pinto Adrien Molyneux Almog Cohen Anthony Leon Arko Provo Mukherjee Ayden Miller Ben McIntosh Bradley Jenkins Bradley Ulis Brandon Lattin Brian Cook Bryan White Chris Liao Christopher Wade Chuck Lukaszewski Collin Dutrow Craig Falls Craig Stonaha Dan Warren Daniel Donahue Daniel Jennings Daron Woods Darrell Stewart David Johnston Doyle Vann Eric Kiebler Eric Raschke Eric Schrenker Faraz Khan Frederic Simon Harsh Khandhadia Ian Williams Isaac Suttell James Trimmier Jeb Campbell Jeremy Soller Jerry Thomas jim bartosh John Anderson John De Witt John Funai John H. Austin, Jr. John591 Joseph Salomone Junaid Ali Kacper Cieśla Kane Holbrook Keith Pasko Kent Durham Koen Wilde Kyle Atkinson Marcelo Garcia Marion Lang Mark Daniel Cohen Mark Delagasse Matt Kaprocki Matthew Johnson Michael Barton Michael Clark Michael Lev Michael Purcell Nathaniel Bennett Nick Hoffenstoffer III Nicolas Katsantonis Paul Wood Rad Antonov Reuben Brewer Richard Steenbergen Robert DeChellis Ross Story Russell Moore SamSword Sandhya Devi Satwik Pani Sean Owen Shane Calimlim SilentGnome Sound Reason Steffen Bendel Steven Giallourakis Terje Vold Thomas Dougherty Tomaz Lovsin Tybie Fitzhugh Vlad Shipulin William Flinn WILLIAM HAY III Zac Sweers
Learn more about your ad choices. Visit megaphone.fm/adchoices
More from PBS Space Time
Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: https://to.pbs.org/DonateSPACEUploaded 16-05-18To learn more about Brilliant, you can go to https://brilliant.org/spacetime/ Conservation laws are among the most important tools in physics. They feel as fundamental as you can get. And yet they’re wrong - or at least they’re only right sometimes. These laws are consequences of a much deeper, more fundamental principle: Noether’s theorem.You can further support us on Patreon at https://www.patreon.com/pbsspacetimeGet your own Space Time t-shirt at http://bit.ly/1QlzoBiTweet at us! @pbsspacetimeFacebook: facebook.com/pbsspacetimeEmail us! pbsspacetime [at] gmail [dot] comComment on Reddit: http://www.reddit.com/r/pbsspacetimeHelp translate our videos!https://www.youtube.com/timedtext_cs_...Previous Episode:How Gaia Changed Astronomy Foreverhttps://www.youtube.com/watch?v=Jdy09...Conservation laws are the cheat codes of physics. They make it possible to solve physics problems that would otherwise be painfully difficult, or even impossible. More than cheat codes – conservation laws are close to the source code – they emerge from profound and simple truths about the basis of reality. They emerge from the fundamental symmetries of nature. The connection between conservation laws and symmetry is encapsulated in Noether’s theorem. But before we dive into this extremely elegant idea, let’s talk about the seeming paradox that inspired it, and the genius who discovered it.Written and hosted by Matt O'DowdGraphics by Grayson BlackmonAssistant Editing and Sound Design by Mike Petrow and Linda HuangMade by Kornhaber Brown (www.kornhaberbrown.com)Special thanks to our Patreon Big Bang, Quasar and Hypernova Supporters: Big BangCoolAsCatsDavid NicklasAnton LifshitsJoey RednerFabrice EapQuasarTambe BarsbayMayank M. MehrotaMars YenturMark RosenthalDean FuquaRoman PinchukColeslawPurdieHypernovaEdmund FokschanerMatthew O’ConnorEugene LawsonBarry HatfieldMartha HuntJoseph SalomoneChuck ZegarCraig PetersonJordan YoungRatfeastJohn HofmannThanks to our Patreon Gamma Ray Burst Supporters: James HughesFabian OlesenKris FernetJane MeyersJames FlowersGreg AllenDenys IvanovNick VirtueAlexey EromenkoNicholas RoseScott GossettMark VasilePatrick MurraySultan AlkhulaifiAlex SetoMichal-Peanut KarmiErik SteinKevin WarneJJ BagnellAvi GoldfingerJohn PettitFlorian StinglmayrBenoit Pagé-GuitardNathan LenizBrandon LabonteDavid CraneGreg WeissShannan CatalanoBrandon Cook Learn more about your ad choices. Visit megaphone.fm/adchoices Learn more about your ad choices. Visit megaphone.fm/adchoices
Check Out PBS' Earth Month playlist: https://www.youtube.com/playlist?list=PLnNZYWyBGJ1F8ofFm4H9UTrHxqU8zngK4
Sign Up on Patreon to get access to the Space Time Discord!https://www.patreon.com/pbsspacetimeUploaded 13-07-21Many Worlds interpretation of quantum mechanics proposes that every time a quantum event gets decided, the universe splits so that every possible outcome really does occur. But where exactly are those worlds, and can we ever see them?Check out the Space Time Merch Storehttps://www.pbsspacetime.com/shopSign up for the mailing list to get episode notifications and hear special announcements!https://mailchi.mp/1a6eb8f2717d/spacetimeHosted by Matt O'DowdWritten by Matt O'Dowd Graphics by Leonardo Scholzer, Yago Ballarini, Pedro Osinski, Adriano Leal and Stephanie FariaGFX Visualizations: Katherine KorneiDirected by Andrew KornhaberAssistant Producer: Setare GholipourExecutive Producers: Eric Brown and Andrew KornhaberEnd Credits Music by J.R.S. Schattenberg: https://www.youtube.com/channel/UCRl6-nb4iOnsij-vnpAjp0QSpecial Thanks to Our Patreon SupportersBIg Bang SupportersKyle BullochAnanth RaoCharlieMrs. Tiffany PoindexterLeo KoguanSandy WuMatthew MillerScott GrayAhmad JodehAlexander TamasMorgan HoughJuan BenetVinnie FalcoFabrice EapMark RosenthalDavid NicklasQuasar SupportersEthan CohenStephen WilcoxChristina OegrenMark HeisingHank SHypernova Supporterswilliam bryanJoe MoreiraMarc ArmstrongScott GorlickNick BerardPaul Stehr-GreenMuON MarketingRussell PopeBen DeloL. Wayne AusbrooksNicholas NewlinDrJYouАнтон КочковJohn R. SlavikMathewDanton SpiveyDonal BotkinJohn PollockEdmund FokschanerMatthew O'Connorchuck zegarJordan Youngm0nkJulien DuboisJohn HofmannDaniel MuzquizTimothy McCullochGamma Ray Burst SupportersKent Durhamjim bartoshNubbleChris NavridesScott R CalkinsCarl ScaggsG MackThe Mad MechanicEllis HallJohn H. Austin, Jr.Diana SBen CampbellLawrence Tholl, DVMFaraz KhanAlmog CohenAlex EdwardsÁdám KettingerMD3Endre PechDaniel JenningsCameron SampsonPratik MukherjeeGeoffrey ClarionNateAdrian PosorDarren DuncanRuss CreechJeremy ReedEric WebsterSteven SartoreDavid JohnstonJ. KingMichael BartonChristopher BarronJames RamseyDrew HartJustin JermynMr TAndrew MannJeremiah JohnsonPeter MertzIsaac SuttellDevon RosenthalOliver FlanaganBleys GoodsonDarryl J LyleRobert WalterBruce BIsmael MontecelSimon OliphantMirik GogriMark Daniel CohenBrandon LattinNickolas Andrew FreemanShane CalimlimTybie FitzhughRobert IlardiEric KieblerCraig StonahaMartin SkansMichael ConroyGraydon GossFrederic SimonTonyfaceJohn RobinsonA GKevin LeeAdrian HatchYurii KonovaliukJohn FunaiCass CostelloTristan DelocheBradley JenkinsKyle HoferDaniel StříbrnýLuaanAlecZeroVlad ShipulinCodyMalte UblKing ZeckendorffNick VirtueScott GossettDan WarrenPatrick SuttonJohn GriffithDaniel LyonsDFaulkGrowingVioletKevin WarneAndreas NautschBrandon labonte Learn more about your ad choices. Visit megaphone.fm/adchoices Learn more about your ad choices. Visit megaphone.fm/adchoices
Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: https://to.pbs.org/DonateSPACEUploaded 17-01-18Learn about Horizon radiation and why it's essential for us to understand as we continue our journey towards the Unruh Effect and Hawking Radiation.You can further support us on Patreon at https://www.patreon.com/pbsspacetimeGet your own Space Time tshirt at http://bit.ly/1QlzoBiTweet at us! @pbsspacetimeFacebook: facebook.com/pbsspacetimeEmail us! pbsspacetime [at] gmail [dot] comComment on Reddit: http://www.reddit.com/r/pbsspacetimeHelp translate our videos!https://www.youtube.com/timedtext_cs_panel?tab=2&c=UC7_gcs09iThXybpVgjHZ_7gPrevious Episode:What Do Stars Sound Like?https://www.youtube.com/watch?v=TbWyuJYybMASource material for our Sounds of Stars episode: MPL3D Solar System - Star Sounds"https://www.youtube.com/watch?v=0ogyKgV4KN4Both theories of relativity, special and general, tell us that many things are observer dependent. Different observers might disagree about the speeds, lengths, or times, but the laws of physics should be the same for everyone. And for two observers with very different, but constant speeds - inertial observers - the vacuum itself should appear the same. Hosted by Matt O'DowdWritten by Graeme Gossel and Matt O'DowdProduced by Rusty WardGraphics by Kurt RossAssistant Editing and Sound Design by Mike Petrow and Meah Denee Barrington Made by Kornhaber Brown (www.kornhaberbrown.com)Special thanks to our Patreon Big Bang, Quasar and Hypernova Supporters: Big BangCoolAsCatsDavid NicklasWilliam James SidisFaisal SaudAnton LifshitsQuasarTambe BarsbayMayank M. MehrotaMars YenturMark RosenthalDean FuquaY2Justin LloydTambe BarsbayHypernovaEdmund FokschanerMax LevineMatthew O’ConnorEugene LawsonMartha HuntJoseph SalomoneChuck ZegarJordan YoungRatfeastJohn HofmannThanks to our Patreon Gamma Ray Burst Supporters: Brandon CookMechanically CrypticDenys IvanovNick VirtueAlexey EromenkoNicholas RoseScott GossettMark DykstraChris HicksMark VasilePatrick MurraySultan AlkhulaifiAlex SetoMichal-Peanut KarmiErik SteinDaniel LyonsKevin WarneJJ BagnellJ RejcAmy JieAvi GoldfingerJohn PettitShannan CatalanoFlorian StiglmayrBenoit Pagé-GuitardNathan LenizJessica FraleyLoro LukicBrandon LabonteDavid CraneGreg Weiss Learn more about your ad choices. Visit megaphone.fm/adchoices Learn more about your ad choices. Visit megaphone.fm/adchoices
PBS Member Stations rely on viewers like you. To support your local station, go to:http://to.pbs.org/DonateSPACEUploaded 15-06-22Sign Up on Patreon to get access to the Space Time Discord!https://www.patreon.com/pbsspacetimeBlack holes are very real, but are also a theoretical nightmare. It turns out that in order to make sense of their paradoxical nature, every black hole has to be thought of as a multitude of imaginary black holes, all connected by wormholes. And you thought the universe couldn’t get any weirder.Check out the Space Time Merch Storehttps://www.pbsspacetime.com/shopSign up for the mailing list to get episode notifications and hear special announcements!https://mailchi.mp/1a6eb8f2717d/spacetimeSearch the Entire Space Time Library Here: https://search.pbsspacetime.com/Prior Episodes Mentioned In this Video:Black Hole Information Paradox - https://youtu.be/9XkHBmE-N34How Quantum Entanglement Creates Entropy - https://youtu.be/vgYQglmYU-8Holographic Principle - https://youtu.be/klpDHn8viX8Feynman’s Infinite Paths - https://youtu.be/vSFRN-ymfgEHosted by Matt O'DowdWritten by Euan McLean and Matt O'Dowd Post Production by Leonardo Scholzer, Yago Ballarini, Pedro Osinski, Adriano Leal and Stephanie FariaGFX Visualizations: Ajay ManuelDirected by Andrew KornhaberAssociate Producer: Bahar GholipourExecutive Producers: Eric Brown and Andrew KornhaberExecutives in Charge (PBS): Adam Dylewski, Maribel Lopez Director of Programming (PBS): Gabrielle Ewing Spacetime is produced by Kornhaber Brown for PBS Digital Studios.This program is produced by Kornhaber Brown, which is solely responsible for its content.© 2022 PBS. All rights reserved.End Credits Music by J.R.S. Schattenberg: https://www.youtube.com/user/MultiDroidekaSpecial Thanks to Our Patreon SupportersBig BangAdam HillierBryce FortPeter BarrettDavid NeumannCharlieLeo KoguanAhmad JodehAlexander TamasMorgan HoughAmyJuan BenetVinnie FalcoFabrice EapMark RosenthalDavid Nicklas QuasarAlex KernEthan CohenStephen WilcoxChristina OegrenMark HeisingHank S Hypernovawilliam bryanGregory ForfaKirk HonourMark EvansdrollereJoe MoreiraMarc ArmstrongScott GorlickPaul Stehr-GreenRussell PopeBen DeloScott GrayАнтон КочковJohn R. SlavikMathewDonal BotkinJohn PollockEdmund FokschanerJoseph Salomonechuck zegarJordan YoungDaniel Muzquiz Gamma Ray BurstHarsh KhandhadiaThomas TarlerSean McCaulCarsten QuinlanSusan AlbeeFrank WalkerMatt QWhizBangeryAvi YashchinMHL SHSKory KirkTerje VoldAnatoliy NagornyycomboyBrett BakerJonathan ConerlyAndre StechertRoss BohnerPaul WoodKent Durhamjim bartoshNubbleScott R CalkinsThe Mad MechanicEllis HallJohn H. Austin, Jr.Diana SBen CampbellFaraz KhanAlmog CohenAlex EdwardsÁdám KettingerMD3Endre PechDaniel JenningsCameron SampsonGeoffrey ClarionDarren DuncanRuss CreechJeremy ReedEric WebsterDavid JohnstonWeb BrowserMichael BartonChristopher BarronMr TAndrew MannIsaac SuttellDevon RosenthalOliver FlanaganBleys GoodsonRobert WalterBruce BSimon OliphantMirik GogriMark DelagasseMark Daniel CohenNickolas Andrew FreemanShane CalimlimTybie FitzhughRobert IlardiEric KieblerCraig StonahaMartin SkansThe Art of SinGraydon GossFrederic SimonTonyfaceJohn RobinsonA GDavid NealjustahatJohn FunaiTristanBradley JenkinsKyle HoferDaniel StříbrnýLuaanCodyThomas DoughertyKing ZeckendorffScott GossettDan WarrenPatrick SuttonJohn GriffithDaniel LyonsDFaulkKevin Warne Learn more about your ad choices. Visit megaphone.fm/adchoices Learn more about your ad choices. Visit megaphone.fm/adchoices