PBS Space Time

PBS

Space Time explores the outer reaches of space, the craziness of astrophysics, the possibilities of sci-fi, and anything else you can think of beyond Planet Earth with our astrophysicist host: Matthew O’Dowd. For all business inquiries and sponsorship opportunities please reach out to: pbsspacetime@lighthouseagents.com Matt O'Dowd spends his time studying the universe, especially really far-away things like quasars, super-massive black holes, and evolving galaxies. He uses telescopes in space to do it. Matt completed his Ph.D. at NASA's Space Telescope Science Institute, followed by work at the University of Melbourne and Columbia University. He's now a professor at the City University of New York's Lehman College and an Associate at the American Museum of Natural History's Hayden Planetarium. Previous host Gabe Perez-Giz is an astrophysicist who studies black hole physics. He received his Ph.D. from Columbia University and also hosted PBS Infinite Series. patreon.com/pbsspacetime

  1. 17 min ago

    How Magnetism Shapes The Universe

    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 How far can you follow a compass needle? As far as the north magnetic pole, where the needle starts spinning wildly? Compass needles align with magnetic field lines, and on the precise spot of magnetic north, those field lines are vertical. So just tilt your compass 90 degrees and you can continue your journey - either down to the molten iron dynamo surrounding the Earth’s core, or up. But up to where? The answer - to everywhere - and today, that’s where we’re going to go. Sign up for the mailing list to get episode notifications and hear special announcements! https://mailchi.mp/1a6eb8f2717d/spacetime Hosted by Matt O'Dowd Written by Matt O'Dowd Graphics by Leonardo Scholzer, Yago Ballarini, & Pedro Osinski Directed by Andrew Kornhaber Assistant Producer: Setare Gholipour Executive Producers: Eric Brown & Andrew Kornhaber End Credits Music by J.R.S. Schattenberg: https://www.youtube.com/channel/UCRl6-nb4iOnsij-vnpAjp0Q Special Thanks to Our Patreon Supporters Big Bang Supporters Kyle Bulloch Ananth Rao Charlie Mrs. Tiffany Poindexter Leo Koguan Sandy Wu Matthew Miller Scott Gray Ahmad Jodeh Alexander Tamas Morgan Hough Juan Benet Vinnie Falco Fabrice Eap Mark Rosenthal David Nicklas Quasar Supporters Ethan Cohen Stephen Wilcox Christina Oegren Mark Heising Hank S Hypernova Supporters william bryan drollere Joe Moreira Marc Armstrong Scott Gorlick Nick Berard Paul Stehr-Green Adam Walters Russell Pope Ben Delo L. Wayne Ausbrooks Nicholas Newlin DrJYou Антон Кочков John R. Slavik Mathew Danton Spivey Donal Botkin John Pollock Edmund Fokschaner Matthew O'Connor chuck zegar Jordan Young m0nk Julien Dubois John Hofmann Daniel Muzquiz Timothy McCulloch Gamma Ray Burst Kent Durham jim bartosh Nubble Chris Navrides Scott R Calkins Carl Scaggs G Mack The Mad Mechanic Ellis Hall John H. Austin, Jr. Diana S Ben Campbell Lawrence Tholl, DVM Faraz Khan Almog Cohen Alex Edwards Ádám Kettinger MD3 Endre Pech Daniel Jennings Cameron Sampson Pratik Mukherjee Geoffrey Clarion Nate Adrian Posor Darren Duncan Russ Creech Jeremy Reed Eric Webster Steven Sartore David Johnston J. King Michael Barton Christopher Barron James Ramsey Drew Hart Justin Jermyn Mr T Andrew Mann Jeremiah Johnson Peter Mertz Isaac Suttell Devon Rosenthal Oliver Flanagan 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 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 Tristan Deloche Bradley Jenkins Kyle Hofer Daniel Stříbrný Luaan AlecZero Vlad Shipulin Cody Malte Ubl King Zeckendorff Nick Virtue Scott Gossett Dan Warren Patrick Sutton John Griffith Daniel Lyons DFaulk GrowingViolet Kevin Warne Andreas Nautsch Brandon labonte Learn more about your ad choices. Visit megaphone.fm/adchoices

  2. 1 hr ago

    Quantum Energy Teleportation Actually EXISTS!

    Remove your personal information from the web at https://joindeleteme.com/SPACETIME The vacuum of space is a chaotic sea of quantum fluctuations. Some have said that this vacuum energy can be harvested to build our future starship engines, or manipulated to build warp drives. It can't. But it is technically possible to move real energy through the quantum vacuum without it passing through intervening space. Quantum energy teleportation may be as close as we get to transporter beams. But how close is that? 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 Christopher Pollack & Matt O'Dowd Post Production by Leonardo Scholzer, Yago Ballarini & Stephanie Faria 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 Tj Steyn Bryce Fort Peter Barrett Alexander Tamas Morgan Hough Juan Benet Vinnie Falco Mark Rosenthal Gavin Rowland Supernova Grace Biaelcki Glenn Sugden Ethan Cohen Stephen Wilcox Robert Ilardi The Tyacke boys Mark Heising Hypernova Spencer Jones Dean Galvin Mike Purvis Michael Tidwell Stephen Saslow Stephen Spidle Massimiliano Pala Justin Lloyd David Giltinan Kenneth See Gregory Forfa Alex Kern Scott Gorlick Paul Stehr-Green Ben Delo Scott Gray Антон Кочков John R. Slavik Donal Botkin chuck zegar Daniel Muzquiz Gamma Ray Burst Collin Dutrow Marion Lang Kurt Gottselig Rick Magnun Bryan White Eric Raschke aaron pinto Kacper Cieśla Satwik Pani John De Witt Nathaniel Bennett Sandhya Devi Michael Oulvey Arko Provo Mukherjee Christopher Wade Anthony Crossland Robert DeChellis Tomaz Lovsin Anthony Leon Nick Hoffenstoffer III Lori Ferris Koen Wilde Nicolas Katsantonis Richard Steenbergen Joe Pavlovic Chuck Lukaszewski Cole B Combs Jerry Thomas 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. Diana S Polijar Faraz Khan Almog Cohen Daniel Jennings Ben McIntosh David Johnston Michael Barton Isaac Suttell Bleys Goodson Mark Delagasse Mark Daniel Cohen Shane Calimlim Tybie Fitzhugh Eric Kiebler Craig Stonaha Frederic Simon Tonyface Matthew Johnson Michael Purcell John Funai Adrien Molyneux Bradley Jenkins Vlad Shipulin Justin Waters Thomas Dougherty Zac Sweers Dan Warren Joseph Salomone Param Saxena ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Learn more about your ad choices. Visit megaphone.fm/adchoices

    Quantum Energy Teleportation Actually EXISTS!
  3. 2 hr ago

    Is Gravity RANDOM Not Quantized?

    Check out the Space Time Merch Store https://www.pbsspacetime.com/shop Sign Up on Patreon to get access to the Space Time Discord! https://www.patreon.com/pbsspacetime The holy grail of theoretical physics is to find the long-sought theory of quantum gravity. But what if this theory is as mythical as the grail of legend? What if gravity isn’t weirdly quantum at all, but rather … just a bit messy? Or random? So says the postquantum gravity hypothesis of Jonathan Oppenheim. PBS Member Stations rely on viewers like you. To support your local station, go to:http://to.pbs.org/DonateSPACE 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 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: https://www.youtube.com/user/MultiDroideka Space Time Was Made Possible In Part By: Big Bang Wojciech Szymski FirstPrinciples Foundation Bryce Fort Peter Barrett David Neumann 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 Chris Webb David Giltinan Ivari Tölp Kenneth See Gregory Forfa Alex Kern Bradley Voorhees Scott Gorlick Paul Stehr-Green Ben Delo Scott Gray Антон Кочков Robert Ilardi John R. Slavik Donal Botkin Edmund Fokschaner chuck zegar Daniel Muzquiz Gamma Ray Burst Kevin Vallejo Nathaniel Bennett Sandhya Devi Michael Oulvey Robin Sur Arko Provo Mukherjee Mike Purvis Christopher Wade Anthony Crossland treborg777 Grace Seraph Stephen Saslow Tomaz Lovsin Anthony Leon Lori Ferris Koen Wilde Nicolas Katsantonis Richard Steenbergen Joe Pavlovic Justin Lloyd 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. Diana S Poljar Faraz Khan Almog Cohen Daniel Jennings Russ Creech Jeremy Reed David Johnston Michael Barton Isaac Suttell Oliver Flanagan 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 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Learn more about your ad choices. Visit megaphone.fm/adchoices

    Is Gravity RANDOM Not Quantized?
  4. 3 hr ago

    What If Space is NOT Hollow?

    To Learn More About Surfshark Check Out: http://surfshark.deals/spacetime 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 Spacetime on its smallest scales is a seething ocean of black holes and wormholes flickering into and out of existence—or so many physicists think has to be the case. But why should we take this spacetime foam seriously if we’ve never seen any evidence of it? 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 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 Space Time Was Made Possible In Part By: Big Bang Sponsors Bryce Fort Peter Barrett David Neumann Sean Maddox Alexander Tamas Morgan Hough Juan Benet Vinnie Falco Fabrice Eap Mark Rosenthal Quasar Sponsors Glenn Sugden Alex Kern Ethan Cohen Stephen Wilcox Mark Heising Hypernova Sponsors Stephen Spidle Chris Webb Ivari Tölp Zachry Wilson Kenneth See Gregory Forfa Joe Moreira Bradley Voorhees Scott Gorlick Paul Stehr-Green Ben Delo Scott Gray Антон Кочков Robert Ilardi John R. Slavik Mathew Donal Botkin Edmund Fokschaner chuck zegar Jordan Young Daniel Muzquiz Gamma Ray Burst Nicolas Katsantonis Robin Bayley Piotr Sarnicki Massimiliano Pala Thomas Nielson Joe Pavlovic Ryan McGaughy Chuck Lukaszewski Edward Hodapp Cole B. Combs Andrea Galvagni Jerry Thomas Nikhil Sharma Ryan Moser John Anderson David Giltinan Scott Hannum Bradley Ulis Craig Falls Vivaan Vaka Kane Holbrook Ross Story teng guo Mason Dillon Matt Langford Harsh Khandhadia Thomas Tarler Susan Albee Frank Walker Matt Quinn Michael Lev Terje Vold James Trimmier Jeremy Soller Andre Stechert Paul Wood Kent Durham Ramon Nogueira Ellis Hall John H. Austin, Jr. Diana S Poljar Faraz Khan Almog Cohen Daniel Jennings Cameron Sampson Russ Creech Jeremy Reed David Johnston Michael Barton Andrew Mann Isaac Suttell Oliver Flanagan Bleys Goodson Robert Walter Mark Delagasse Mark Daniel Cohen Nickolas Andrew Freeman Shane Calimlim Tybie Fitzhugh Eric Kiebler Craig Stonaha Frederic Simon Tonyface John Robinson Alex Gan David Barnholdt David Neal John Funai Bradley Jenkins Vlad Shipulin Cody Brumfield Thomas Dougherty King Zeckendorff Dan Warren Joseph Salomone Patrick Sutton John Griffith Dean Faulk Learn more about your ad choices. Visit megaphone.fm/adchoices

    What If Space is NOT Hollow?
  5. 4 hr ago

    The Quasar from The Beginning of Time | STELLAR

    Thank you to Draper and its "We Hack the Moon" initiative for supporting PBS Digital Studios. Learn more at https://wehackthemoon.com. PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateSPACE Check out Physics Girl visit LIGO to see where they discovered Gravitational Waves https://youtu.be/jtp71NT0GNg Recently, the oldest quasar ever seen was discovered by the Gemini North telescope in Hawaii, the Magellan Telescopes at Las Campanas Observatory in Chile, as well as the Large Binocular Telescope in Arizona. In this first episode of the PBS DS mini-series, STELLAR, Matt travels to the top of Mauna Kea to visit the Gemini North telescope and see just how they found this ancient Quasar and it’s massive black hole. Stellar is a brand new miniseries done in collaboration with Dianna Cowern from @Physics Girl and Joe Hanson from @It's Okay To Be Smart Over six episodes we travel to some of the world's most important telescopes, go inside amazing space research centers, and talk with brilliant scientists. Next up, Dianna from Physics Girl visits LIGO observatory in Washington that detected the very first gravitational waves. Then Joe Hanson visits one of the telescopes that was part of world spanning Event Horizon Telescope. You'll be able to see future episodes on the Physics Girl and It’s Okay to be Smart YouTube channels, as well as the PBS Digital Studios Facebook page. Stellar is a part of the PBS Summer of Space. There will be lots of awesome space-related content all summer long on PBS. See what's happening at https://www.pbs.org/summer-of-space/ #SummerOfSpacePBS #astrophysics #space Special Thanks to Joy Pollard and Gemini Observatory for all their help making this episode. Check out the new Space Time Merch Store! https://pbsspacetime.com/ Support Space Time on Patreon https://www.patreon.com/pbsspacetime Hosted by Matt O'Dowd Written by: Sophia Chen, Matt O'Dowd, Andrew Kornhaber, Eric Brown Directed by: Eric Brown and Andrew Kornhaber Producer: Randa Eid Director of Photography: Eric Brouse Sound: Tobi Nova Production Assistant: Anna Bosketti Editing: Pavel Ezrohi Graphics: Murilo Lopes Assistant Editing: Daniel Sircar Produced By: Kornhaber Brown Learn more about your ad choices. Visit megaphone.fm/adchoices

  6. 5 hr ago

    Does the Planck Length Disrupt E=MC^2?

    On November 29th, 20% off the whole merch store! https://www.pbsspacetime.com/shop Every good nerd knows that E=mc^2. Every great nerd knows that, really, E^2=m^2c^4+p^2c^2 Want to know what that even means? Sure, I’ll tell you, but today I’d like to invite you to an even higher level of nerdom with extra bits to Einstein’s famous equation that will make even the greatest nerds quiver in their … space time merch if they turn out to be real. 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 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 Christopher Pollack & Matt O'Dowd Post Production by Leonardo Scholzer, Yago Ballarini & Stephanie Faria 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. © 2024 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 Wojciech Szymski Bryce Fort Peter Barrett Alexander Tamas Morgan Hough Juan Benet Vinnie Falco Mark Rosenthal Supernova Grace Biaelcki Glenn Sugden Ethan Cohen Stephen Wilcox Mark Heising Hypernova Dean Galvin Michael Tidwell Robert DeChellis Stephen Spidle Chris Webb Massimiliano Pala Justin Lloyd David Giltinan Kenneth See Gregory Forfa Alex Kern Zubin Dowlaty Scott Gorlick Paul Stehr-Green Ben Delo Scott Gray Антон Кочков Robert Ilardi John R. Slavik Donal Botkin Edmund Fokschaner chuck zegar Gamma Ray Burst Satwik Pani Param Saxena John De Witt Nathaniel Bennett Sandhya Devi Michael Oulvey 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 Michael Lev Rad Antonov Terje Vold James Trimmier Jeremy Soller Paul Wood Kent Durham jim bartosh John H. Austin, Jr. Diana S 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 Jim Hudson Alex Gan John Funai Adrien Molyneux Bradley Jenkins Vlad Shipulin Justin Waters Thomas Dougherty Zac Sweers Dan Warren Joseph Salomone Julien Dubois ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Learn more about your ad choices. Visit megaphone.fm/adchoices

    Does the Planck Length Disrupt E=MC^2?
  7. 6 hr ago

    Can You Observe a Typical Universe?

    PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateSPACE ↓ More info below ↓ 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://pbsspacetime.com/ The moment you started observing reality, you hopelessly polluted any conclusions you might make about it. The anthropic principle guarantees that you are NOT seeing the universe in most typical state. But used correctly, this highly controversial idea can be extremely powerful. So, how do you correctly use the anthropic principle? Hosted by Matt O'Dowd Written by Matt O'Dowd Graphics by Leonardo Scholzer & Adriano Leal Directed by: Andrew Kornhaber Executive Producers: Eric Brown & Andrew Kornhaber End Credits Music by J.R.S. Schattenberg: https://www.youtube.com/channel/UCRl6-nb4iOnsij-vnpAjp0Q Special Thanks to Dr. Flournoy!!! Check out his lectures Below: Particle Physics: https://www.youtube.com/playlist?list=PLDlWMHnDwylijo0yfs3xUN9ad6-YZjPLT General Relativity: https://www.youtube.com/playlist?list=PLDlWMHnDwyliMevB36wgRbjXhJkoN_RUQ According to the original definitions by Brandon Carter, the weak anthropic principle states that we must live in a place and time in the universe capable of supporting observers - in our case, a habitable biosphere, and the strong anthropic principle, which states that the universe itself must have the conditions necessary for producing environments that, in turn, produce observers. That means the fundamental constants and initial conditions of the universe must be just right to allow nice habitable planets to one day form. Let’s just call it the anthropic principle: we necessarily observe from an environment capable of producing observers; be that environment a planet within a universe or a universe within a multiverse. Thanks to Our Patreon Supporters Big Bang Supporters: Alex Flournoy Alexander Tamas Craig Stonaha David Barnholdt David Nicklas Fabrice Eap John S Juan Benet matt miller Morgan Hough Quasar Supporters Mark Heising Mark Rosenthal Vinnie Falco Hypernova Supporters chuck zegar Danton Spivey Donal Botkin Edmund Fokschaner Hank S John Hofmann John R. Slavik Jordan Young Joseph Salomone Mathew Matthew O'Connor Syed Ansar Timothy McCulloch Learn more about your ad choices. Visit megaphone.fm/adchoices

  8. 6 hr ago

    Sound Waves from the Beginning of Time

    PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateSPACE ↓ More info below ↓ You can check out Google's Science Journal app at http://g.co/ScienceJournal Check out the new Space Time Merch Store! https://pbsspacetime.com/ Support Space Time on Patreon https://www.patreon.com/pbsspacetime Email your answers to: pbsspacetime@gmail.com With the subject heading: Negative Mass Challenge Question Invisible to the naked eye, our night sky is scattered with the 100s of billions of galaxies the fill the known universe. Like the stars, these galaxies form constellations – hidden patterns that echo the reverberations of matter and light in an epoch long before galaxies ever formed. These are the baryon acoustic oscillations, and they may hold the key to understanding the nature of dark energy. Tweet at us! @pbsspacetime Facebook: facebook.com/pbsspacetime Email us! pbsspacetime [at] gmail [dot] com Comment on Reddit: http://www.reddit.com/r/pbsspacetime Help translate our videos! https://www.youtube.com/timedtext_cs Previous Episode: Why String Theory Is Wrong https://youtu.be/IhpGdumLRqs Hosted by Matt O'Dowd Written by Matt O'Dowd Graphics by Luke Maroldi Directing by Andrew Kornhaber The field of cosmology – the study of the universe on its largest scales – was once the least precise in all of astrophysics. The impossibly vast distances made accurate measurements near impossible. But as our telescopes and our techniques improved over the past few decades, things are now different. We live in the era of precision cosmology, in which we know to stunning detail the properties that govern the very birth, evolution, and end of our universe. We talked about one of those properties in a recent episode – the Hubble constant – and about a growing conflict in its measured value which hints at strange new physics. Today we’ll talk about another measurement that may help resolve this crisis: the baryon acoustic oscillations. They the fossils of the first sound waves in the universe, imprinted in the distribution of galaxies on the sky. And in these patterns we can read the expansion history of the universe. Special thanks to our Patreon Big Bang, Quasar and Hypernova Supporters: Big Bang: Anton Lifshits coolascats David Nicklas Fabrice Eap Juan Benet Justin Lloyd Tim Davis Quasar: James Flowers Mark Rosenthal Tambe Barsbay Vinnie Falco Hypernova: chuck zegar Danton Spivey Donal Botkin Edmund Fokschaner Jens Theisen John Hofmann Jordan Young Joseph Salomone kkm Mark Heising Matthew O'Connor Thanks to our Patreon Gamma Ray Burst Supporters: Alexey Eromenko Antonio Ruiz Bradley Jenkins Brandon Labonte Buruk Aregawi Carlo Mogavero Daniel Lyons David Behtala David Crane David Schmidt Dustan Jones Geoffrey Short Greg Weiss Jack Frosch James Hughes James Quintero Jinal Doshi JJ Bagnell John Webber Jon Folks Jonah Joseph Emison Josh Thomas Kenneth F Leonard Kevin Warne Kyle Hofer Malte Ubl Mark Vasile Nathan Hitchings Nicholas Rose Nick Virtue Ratfeast Richard Broman Scott Gossett Sigurd Ruud Frivik Tim Crookham Tim Stephani Tommy Mogensen سلطان الخليفي Learn more about your ad choices. Visit megaphone.fm/adchoices

About

Space Time explores the outer reaches of space, the craziness of astrophysics, the possibilities of sci-fi, and anything else you can think of beyond Planet Earth with our astrophysicist host: Matthew O’Dowd. For all business inquiries and sponsorship opportunities please reach out to: pbsspacetime@lighthouseagents.com Matt O'Dowd spends his time studying the universe, especially really far-away things like quasars, super-massive black holes, and evolving galaxies. He uses telescopes in space to do it. Matt completed his Ph.D. at NASA's Space Telescope Science Institute, followed by work at the University of Melbourne and Columbia University. He's now a professor at the City University of New York's Lehman College and an Associate at the American Museum of Natural History's Hayden Planetarium. Previous host Gabe Perez-Giz is an astrophysicist who studies black hole physics. He received his Ph.D. from Columbia University and also hosted PBS Infinite Series. patreon.com/pbsspacetime

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