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Space seems fundamental. To build a universe, surely you need something to build it on or in. Many, maybe most physicists now think that the fabric of space emerges from something deeper. And perhaps the most existentially disturbing such proposal is that our 3-D universe is just the inward projection of an infinitely distant boundary. A hologram, or sorts. Let’s see how that can actually work, and what the holographic principle really says about the “realness” of this universe.
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Hosted by Matt O’Dowd
Written by Matt O’Dowd
Post Production by Leonardo Scholzer, Yago Ballarini & Stephanie Faria
Directed by Andrew Kornhaber
Associate Producer: Bahar Gholipour
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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.
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21 Comments
@plixplop
02/20/2025 - 8:34 PMOh
@FiggFig
02/20/2025 - 8:34 PMWhen scientists and hippies get together 😂
@thelastone0001
02/20/2025 - 8:34 PMIm just thinking of Lovecraft and Yog-Sothoth as the Holographic Boundary
@jeremyhunter1459
02/20/2025 - 8:34 PMQuestion to the title of the video
I don't know, why don't we just keep building telescopes that are limited to their orbit of Earth then we'll never know. It's too bad we don't have the technology to send out space probes, even "slow" ones with instruments to study and look at all that and perhaps send that information back?
@seanharveygoogle
02/20/2025 - 8:34 PMi had previously assumed that 3d space would emerge from the boundary because of the lack of local reality to space-time. how does these dual universes account for that?
@KillsAll.
02/20/2025 - 8:34 PMPatterns, patents or Pattons? Ur Texas accent sounds more Brooklyn today
@minilabyrinth
02/20/2025 - 8:34 PMI didnt understand a lot of this but my current ideas of the universe is a weird mish mash of the ideas that consciousness is a fundamental building block of the universe, there is a multiverse with one universe for every possibility, and the idea that our consciousness, belief system, and collective knowledge/beliefs literally create and shape our current universe in a shared public lobby of sorts as well as our own personalized aspects especially when it comes to spiritual and religious beliefs
@deathwarmedover
02/20/2025 - 8:34 PMTime is a one dimensional string with the boundaries of the Big Bang and the infinite expansion of the universe. Meaning we're inside a singularity and you are a string of time. I'm a big fan of AdS/CFT. 😀
@CornyG4711
02/20/2025 - 8:34 PMA long time ago I saw a video of this guy in a leather harness pretending to be a dog and giving a tutorial on how to do so.
@wolfdaddy7098
02/20/2025 - 8:34 PMHeathen will dream up anything to avoid the reality accurately described in the Holy Bible.
But there has never been a worse time to play with delusional games, as the soul-damning great deception of false "good" is being prepared to accompany the nearing great tribulation.
The window of opportunity for Salvation of the eternal soul will soon close permanently.
@drcunda1
02/20/2025 - 8:34 PMThe holographic universe is widely revered as one of the most important breakthroughs of the past few decades.
The reason is that it strikes at the mystery of quantum gravity – the long-sought unification of quantum physics, which governs particles and their interactions, and general relativity, which casts gravity as the product of warped space-time.
Then again, you might wonder why the idea is held in such high regard given that it remains a mathematical conjecture, which means it is unproven, and that the model universe it applies to has a bizarre geometry that doesn’t resemble our universe.
The answer, it turns out, is twofold.
First, the holographic conjecture has helped to make sense of otherwise intractable problems in particle physics and black holes.
Second, and more intriguing perhaps, physicists have finally begun to make headway in their attempts to demonstrate that the holographic principle applies to the cosmos we actually reside in.
🍀
NEW SCIENTIST
@tracy9610
02/20/2025 - 8:34 PMThat was so hard on my brain, I think I started to dissociate 😂
@ccriztoff
02/20/2025 - 8:34 PMit's a higher dimensional structure that connects everything
@dilippunekar6022
02/20/2025 - 8:34 PM🎉🎉🎉🎉🎉🎉🎉🎉🎉🎉🎉
@Jizzlobberz
02/20/2025 - 8:34 PMMap every concept via the mindset of your polar opposite and you can fill in the blanks of the sphere with ease.
@MsTyrie
02/20/2025 - 8:34 PM“Space is the one thing that connects all things.”
(Space nerd pickup line)
Reply: Space is actually an emergent property of things such as that bouncer over there.
@Chazulu2
02/20/2025 - 8:34 PMNo
@LoxleyMusic
02/20/2025 - 8:34 PMThere's no such boundary.
@johnmiranda2307
02/20/2025 - 8:34 PMThe surface of the Sun is a perfect reflection of the universe that surrounds it. We live in a black hole and cannot perceive beyond it.
@nickblacksoul4318
02/20/2025 - 8:34 PMSounds like the universe is growing because of information and dark energy is the flood of information
@Best..YT..Music..Playlists
02/20/2025 - 8:34 PMarent humans a form of anti matter?