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Spacetime on its smallest scales is a seething ocean of black holes and wormholes flickering into and out of existenceor so many physicists think has to be the case. But why should we take this spacetime foam seriously if weve never seen any evidence of it?

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Hosted by Matt O'Dowd
Written by Christopher Pollack & Matt O'Dowd
Post Production by Leonardo Scholzer, Yago Ballarini, Adriano Leal & 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 produced by Kornhaber Brown for PBS Digital Studios.
This program is produced by Kornhaber Brown, which is solely responsible for its content.
2023 PBS. All rights reserved.

End Credits Music by J.R.S. Schattenberg: https://www.youtube.com/user/MultiDroideka

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What If Physics IS NOT Describing Reality?

$What If the Galactic Habitable Zone LIMITS Intelligent Life? Check Out Matt on Fate & Fabled Here: https://youtu.be/utJZ8YmXOnc PBS Member Stations rely on viewers like you. To support your local station, go to:http://to.pbs.org/DonateSPACE Sign Up on Patreon to get access to the Space Time Discord! https://www.patreon.com/pbsspacetime Our solar system is a tiny bubble of habitability suspended in a vast universe that mostly wants to kill us. In fact, a good fraction of our own galaxy turns out to be utterly uninhabitable, even for sunlike stellar systems. Is this why .. most of us .. havent seen aliens? 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 Hosted by Matt ODowd Written by Matt ODowd Post Production by Leonardo Scholzer, Yago Ballarini, Pedro Osinski, Adriano Leal & Stephanie Faria GFX Visualizations: Ajay Manuel Directed by Andrew Kornhaber Associate Producer: Bahar Gholipour Executive Producers: Eric Brown & Andrew Kornhaber Executives 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/MultiDroideka Special Thanks to Our Patreon Supporters Big Bang Supporters Adam Hillier Bryce Fort Mark Evans David Taiclet Peter Barrett David Neumann Charlie Leo Koguan Sandy Wu Ahmad Jodeh Alexander Tamas Morgan Hough Amy Juan Benet Vinnie Falco Fabrice Eap Mark Rosenthal David Nicklas Quasar Supporters Marty Alex Kern Ethan Cohen Stephen Wilcox Christina Oegren Mark Heising Hank S Hypernova Supporters William Bryan Gregory Forfa Kirk Honour Drollere Joe Moreira Marc Armstrong Scott Gorlick Paul Stehr-Green Adam Walters Russell Pope Ben Delo Scott Gray John R. Slavik Mathew Donal Botkin John Pollock Edmund Fokschaner Joseph Salomone Chuck Zegar Jordan Young Daniel Muzquiz Gamma Ray Burst Supporters Walter Thomas Tarler bsgbryan Sean McCaul Carsten Quinlan Susan Albee Frank Walker Matt Q WhizBangery Avi Yashchin MHL SHS Kory Kirk Terje Vold Anatoliy Nagornyy comboy Brett Baker Jonathan Conerly Andre Stechert Ross Bohner Paul Wood Kent Durham jim bartosh Nubble Scott R Calkins The Mad Mechanic Juan David Gil Wiedman Ellis Hall John H. Austin, Jr. Diana S Ben Campbell Faraz Khan Almog Cohen Alex Edwards dm Kettinger MD3 Endre Pech Daniel Jennings Cameron Sampson Pratik Mukherjee Geoffrey Clarion Darren Duncan Russ Creech Jeremy Reed Eric Webster David Johnston Web Browser Michael Barton Christopher Barron James Ramsey Mr T Andrew Mann Isaac Suttell Devon Rosenthal Oliver Flanagan Bleys Goodson Robert Walter Bruce B Simon Oliphant Mirik Gogri Mark Delagasse Mark Daniel Cohen Brandon Lattin Nickolas Andrew Freeman Shane Calimlim Tybie Fitzhugh Robert Ilardi Eric Kiebler Craig Stonaha Martin Skans The Art of Sin Graydon Goss Frederic Simon Tonyface John Robinson A G David Neal Kevin Lee justahat John Funai Tristan Bradley Jenkins Kyle Hofer Daniel Stbrn Luaan Cody Thomas Dougherty King Zeckendorff Scott Gossett Dan Warren Patrick Sutton John Griffith Daniel Lyons DFaulk Kevin Warne$

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What if Humans Are NOT Earths First Civilization? | Silurian Hypothesis

$What Caused the Big Bang? PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateSPACE More info below Check out the new Space Time Merch Store! https://pbsspacetime.com/ Support Space Time on Patreon https://www.patreon.com/pbsspacetime Every astronomy textbook tells us that soon after the Big Bang, there was a period of exponentially accelerating expansion called cosmic inflation. In a tiny fraction of a second, inflationary expansion multiplied the size of the universe by a larger factor than in the following 13 and a half billion years of regular expansion. This story seems like a bit of a stretch. Is there really any mechanism that could cause something like this to happen? What what were covering today the real physics of cosmic inflation. Hosted by Matt ODowd Written by Matt ODowd Graphics by Leonardo Scholzer Directed by Andrew Kornhaber Produced By: Kornhaber Brown Dark Energy Playlist: https://www.youtube.com/playlist?list=PLsPUh22kYmNA6WUmOsEEi32zi_RdSUF4i The Quantum Vacuum and Hawking Radiation Playlist https://www.youtube.com/watch?v=OvgZqGxF3eo&list=PLsPUh22kYmNAHB1W2_Ka2F83sObdczwKr Most cosmologists buy some variation of the inflation hypothesis. It seems to very neatly solve some of the biggest questions in cosmology. Those being: why is matter and energy so smoothly spread out across the entire observable universe? And why is the geometry of the universe so flat? Neither should be expected unless the universe expanded much more rapidly early on. We explored these problems in an earlier video worth a look if you really want to get inflation. Another problem fixed by inflation is the absence of magnetic monopoles strange particles predicted to have been produced in the early universe. Well come back to those another time. Big Bang Supporters: Anton Lifshits David Nicklas Fabrice Eap Juan Benet Justin Lloyd Morgan Hough Quasar Supporters: Mark Heising Mark Rosenthal Tambe Barsbay Vinnie Falco Hypernova Supporters: Chuck Zegar Danton Spivey Donal Botkin Edmund Fokschaner Hank S John Hofmann John R. Slavik Jordan Young Joseph Salomone kkm Mark Heising Matthew Matthew OConnor Syed Ansar Gamma Ray Burst Supporters: Adrien Hatch Alexey Eromenko Andreas Nautsch Bradley Jenkins Brandon Labonte Carlo Mogavero Daniel Lyons David Behtala DFaulk Dustan Jones Geoffrey Short James Flowers James Quintero John Funai John Pollock Jonah Jonathan Nesfeder Joseph Dillman Joseph Emison Josh Thomas Kevin Warne Kyle Hofer Malte Ubl Mark Vasile Nathan Hitchings Nick Virtue Paul Rose Ryan Jones Scott Gossett Sigurd Ruud Frivik Tim Jones Tim Stephani Tommy Mogensen Yurii Konovaliuk$

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What If Space is NOT Empty? @pbsspacetime