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The NEW Crisis in Cosmology

PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateSPACE ↓ More info below ↓   / pbsspacetime   I have good news and bad news. Bad news first: two years ago we reported on the Crisis in Cosmology. Since then, it’s only gotten worse. And actually, the good news is also that the crisis in cosmology has actually gotten worse, which means we may be onto something! The most exciting thing for any scientist is when something they thought they knew turns out to be wrong. So it’s no wonder that many cosmologists are starting to get excited by what has become known as the Hubble tension, or the crisis in cosmology. The “crisis” is the fact that we have two extremely careful, increasingly precise measurements of how fast the universe is expanding which should agree with each other, and yet they don’t. Original Crisis in Cosmology    • The Crisis in Cosmology   Sabine Hossenfelder's episode "Do we travel through time at the speed of light?"    • Do we travel through time at the spee...   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/space... Hosted by Matt O'Dowd Written by Matt Caplan & Matt O'Dowd Graphics by Leonardo Scholzer, Yago Ballarini, Pedro Osinski, Adriano Leal & Stephanie Faria GFX Visualizations: Katherine Kornei Directed by Andrew Kornhaber Assistant Producer: Setare Gholipour Executive Producers: Eric Brown & Andrew Kornhaber Standard Candle Definition https://astronomy.swin.edu.au/cosmos/... End Credits Music by J.R.S. Schattenberg:    / @jrsschattenberg   Special Thanks to Our Patreon Supporters Big Bang Rick DeWitt Sandy Wu Matthew Miller Brodie Rao Scott Gray Ahmad Jodeh Radu Negulescu Alexander Tamas Morgan Hough Juan Benet Fabrice Eap Mark Rosenthal David Nicklas Quasar Supporters Hank S Christina Oegren Mark Heising Vinnie Falco Hypernova william bryan Scott Gorlick Nick Berard Paul Stehr-Green Leo Emerson muON Marketing Russell Pope Ben Delo L. Wayne Ausbrooks Nicholas Newlin Adrian Posor Mark Matthew Bosko Антон Кочков Alec S-L John R. Slavik Mathew Danton Spivey Donal Botkin John Pollock Edmund Fokschaner Joseph Salomone Matthew O'Connor chuck zegar Jordan Young m0nk John Hofmann Timothy McCulloch Gamma Ray Burst Supporters Andrew Macleod Diana S Douglas Drane Ben Campbell Lawrence Tholl, DVM Faraz Khan Almog Cohen Alex Edwards Nick Ádám Kettinger Sylvain Leduc Anthony Kahng MD3 Endre Pech Daniel Jennings Cameron Sampson Pratik Mukherjee Geoffrey Clarion Nate Darren Duncan Lily kawaii Russ Creech Jeremy Reed Derek Davis Eric Webster Steven Sartore DrJYou David Johnston J. King Michael Barton Christopher Barron James Ramsey Drew Hart Justin Jermyn Mr T Andrew Mann Jeremiah Johnson fieldsa eleanory Peter Mertz Kevin O'Connell Richard Deighton Isaac Suttell Devon Rosenthal Oliver Flanagan Dawn M Fink Bleys Goodson Darryl J Lyle Robert Walter Bruce B Ismael Montecel Simon Oliphant Mirik Gogri Mark Daniel Cohen Brandon Lattin Nickolas Andrew Freeman Shane Calimlim Tybie Fitzhugh Robert Ilardi Astaurus Eric Kiebler Craig Stonaha Martin Skans Michael Conroy Graydon Goss Frederic Simon Tonyface John Robinson A G Kevin Lee Adrian Hatch Yurii Konovaliuk John Funai Cass Costello Geoffrey Short Bradley Jenkins Kyle Hofer Tim Stephani Luaan AlecZero Cody Malte Ubl King Zeckendorff Nick Virtue Scott Gossett Martin J Lollar Dan Warren Patrick Sutton John Griffith Daniel Lyons DFaulk GrowingViolet Kevin Warne Andreas Nautsch Brandon labonte