PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateSPACE↓ More info below ↓Uploaded 09-03-21https://www.patreon.com/pbsspacetimeWe know that gravity exerts its pull on light, and we have an explanation for why. Actually, we have multiple explanations that all predict the same thing. And at first glance, these explanations seem to describe completely different causes. So what is the true connection between light and gravity, or is truth, in fact, entirely relative?Sabine Hossenfelder's episode "Do we travel through time at the speed of light?"https://youtu.be/iBTez-nTKesCheck 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 Kornhaber"FREE GMC Motorhome reimagined low poly" (https://skfb.ly/6XxAN) by Karol Miklas is licensed under Creative Commons Attribution (http://creativecommons.org/licenses/by/4.0/). "Heavy Cannon Tower" (https://skfb.ly/6WQqP) by Kai Xiang is licensed under Creative Commons Attribution (http://creativecommons.org/licenses/by/4.0/). "Sentinelle - Matrix" (http://sskfb.ly/6sMKI) by niko300 is licensed under Creative Commons Attribution (http://creativecommons.org/licensesby/4.0/) Spaceballs RV (http://sskfb.ly/6RBOs) by Warkarma is licensed under Creative Commons Attribution (http://creativecommons.org/licensesby/4.0/)End Credits Music by J.R.S. Schattenberg: https://www.youtube.com/channel/UCRl6-nb4iOnsij-vnpAjp0QSpecial thanks to Our Patrons!Big Bang SponsorsRick DeWittSandy WuMatthew MillerBrodie RaoScott GrayAhmad JodehRadu NegulescuAlexander TamasMorgan HoughJuan BenetFabrice EapMark RosenthalDavid NicklasQuasar SponsorsHank SChristina OegrenMark HeisingHypernova Supporterswilliam bryanNick BerardPaul Stehr-GreenLeo EmersonmuOn MarketingRussell PopeBen DeloL. Wayne AusbrooksNicholas NewlinAdrian PosorMark Matthew BoskoАнтон КочковAlec S-LJohn R. SlavikMathewDanton SpiveyDonal BotkinJohn PollockEdmund FokschanerJoseph SalomoneMatthew O'Connorchuck zegarJordan Youngm0nkJohn HofmannTimothy McCullochGamma Ray Burst SupportersDouglas DraneBen CampbellLawrence Tholl, DVMFaraz KhanAlmog CohenAlex EdwardsNickÁdám KettingerSylvain LeducAnthony KahngMD3Endre PechDaniel JenningsCameron SampsonPratik MukherjeeGeoffrey ClarionNateDarren DuncanLily kawaiiRuss CreechJeremy ReedDerek DavisEric WebsterSteven SartoreDrJYouDavid JohnstonJ. KingMichael BartonChristopher BarronJames RamseyDrew HartJustin JermynMr TAndrew MannJeremiah Johnsonfieldsa eleanoryPeter MertzKevin O'ConnellRichard DeightonIsaac SuttellDevon RosenthalOliver FlanaganDawn M FinkBleys GoodsonDarryl J LyleRobert WalterBruce BIsmael MontecelSimon OliphantMirik GogriDavid HughesMark Daniel CohenBrandon LattinNickolas Andrew FreemanShane CalimlimTybie FitzhughRobert IlardiAstaurusEric KieblerCraig StonahaMartin SkansMichael ConroyGraydon GossFrederic SimonTonyfaceJohn RobinsonA GKevin LeeAdrian HatchYurii KonovaliukJohn FunaiCass CostelloGeoffrey ShortBradley JenkinsKyle HoferTim StephaniLuaanAlecZeroCodyMalte UblKing ZeckendorffNick VirtueScott GossettMartin J LollarDan WarrenPatrick SuttonJohn GriffithDaniel LyonsDFaulkGrowingVioletKevin WarneAndreas NautschBrandon labonte Learn more about your ad choices. Visit megaphone.fm/adchoices
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