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Can Space Time Remember?

2024-11-14 Education
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PBS Space Time
PBS Space Time
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Thank you to Raycon for supporting PBS. Go to https://www.buyraycon.com/spacetime for up to 30% off your order, plus free shipping! Brought to you by Raycon. There are cosmic events so powerful that they leave permanent marks on the fabric of the universe itself. Imagine two colossal black holes spiraling into each other, yes they send ripples in the fabric of spacetime—gravitational waves that we’ve only recently learned to sense. Ripples pass, leaving the pond … or the universe … unchanged when they’re gone. But ripples aren’t the only type of wave. There’s another type of wave that leaves a permanent mark—a memory etched in the fabric of the universe. They’re akin to gravitational tsunamis, and we’re on the verge of being able to detect them. Sign Up on Patreon to get access to the Space Time Discord! https://www.patreon.com/pbsspacetime PBS Member Stations rely on viewers like you. To support your local station, go to:http://to.pbs.org/DonateSPACE 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. © 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

Top Comments (10)

@maxmustermann5590 2024-11-14

Man when I started watching I was still in college, now im 30 and Matts beard is going grey. Hope the show keeps going strong for at least another decade

1.4k 53 replies
@mitchellwilley7208 2024-11-14

I just wanna thank PBS Space Time for all the hard work and great videos they create. I didnt know any physics and now i have a deep understanding of how the universe works. You guys inspired me to learn physics. Thank you.

407 26 replies
@KarelPletsStriker 2024-11-15

Hi, gravitational wave physicist here. Small correction on how LISA's interferometry works. It doesn't actually work like a physical interferometer because the lasers would become too faint at such long distances to do it the normal way. Instead, it basically times the distance a photon takes to go from one detector to the other in 1 direction, and then the interferometric pattern you would normally get is reconstructed through a technique called Time Delay Interferometry (TDI)! Sadly the data analysis for LISA is quite different from the previous ground-based detectors and everyone's slightly panicking about it

400 52 replies
@edibleapeman 2024-11-14

"Gravitational Spin Memory" sounds like the name of a late-90s techno/hiphop band.

115 3 replies
@HousecoatNinja 2024-11-14

To Matt and the team at PBS Space-time, thank you for your years of dedication and service providing us (the general public) such an in depth and resourceful insight into quantum physics, astrophysics, and all that is space and time. I've been watching since the days of calculating what planet Mario is on to jump as high as he does. Since the previous host... You enrich my life and satisfy my intense curiosity of the universe we live in. I live for this. Thanks again, JT Gullickson. From Canada. Love and Peace

109
@Turnoutburndown 2024-11-14

"The universe is very old, but it remembers." Why was this so ominous!? 🤣

93 12 replies
@fionacankat 2024-11-14

Last time I was this early the electroweak force hadn't split yet

81
@nefdsnet 2024-11-15

So Dr. Serova was right and regular deformation due to FTL propulsion causes cumulative damage. Better limit cruising speeds to warp 5 until we can come up with variable geometry warp fields that will be able to prevent further damage.

62 2 replies
@MennoEelkema 2024-11-14

3:00 This is not strictly true: water waves create Stokes' drift, which is a net displacement of water in the direction of the wave.

45 6 replies
@BenGrimm977 2024-11-15

Permanent displacement in space-time suggests it’s not only elastic but also has a ‘plastic’ quality, behaving like a medium that can be permanently shaped. This also opens up the idea that space-time could have quantized properties, aligning it with quantum gravity ideas.

35 5 replies

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