PBS Space Time
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Using geometry we can not only understand, but visualize how causality dictates the order of events in our universe. Start your Audible trial today at http://www.audible.com/spacetime
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In this episode we dive deeper into the relationship between space and time and explore how we can geometrically map the causality of the universe and increase our understanding of how time and distance relate to one another.
Important Reference Episodes:
The Speed of Light is not about Light (1:16)
Can You Trust Your Eyes in Space Time? (1:16)
Previous Episode:
Why Quasars are so Awesome
Written and hosted by Matt OβDowd
Produced by Rusty Ward
Graphics by Grayson Blackmon
Made by Kornhaber Brown (www.kornhaberbrown.com)
Comments Answered by Matt:
Michael Lloyd
Jose Hernandez
Joan Eunice
Mike Cammiso
Bikram Sao
Cinestar Productions
Special thanks to our Patreon Big Bang, Quasar and Hypernova Supporters:
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Thanks to our Patreon Gamma Ray Burst Supporters:
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32 Comments
@Jszar
02/21/2025 - 8:41 AMNothing like the cosmic perspective for taking oneβs mind off the present.
@lukewilson125
02/21/2025 - 8:41 AMLooks like Indraβs net to me.
@AuvergneNFS
02/21/2025 - 8:41 AMI think its quite a bit missleading, its not about FTL breaking space-time geomertry, its about FTL inside time dialation physics breaking space-time geomertry.
@Ms.Robot.
02/21/2025 - 8:41 AMβ€thxπ
@nelson6702
02/21/2025 - 8:41 AMI'll give this a few more goes
@sarahbear9482
02/21/2025 - 8:41 AMLove everyone who comments on how they canβt fathom what heβs on about when the videos are clearly aimed at the physics novice and explained to make sense to the most basic layman π
@George___b3
02/21/2025 - 8:41 AMPessimistic, because here's another load of important refund information
@Sarah__36y7
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@Sarah__36y7
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@eastindiaV
02/21/2025 - 8:41 AMWithout understanding my impact on society as a whole, I cannot predict what will arise from these causalities.
I need to see what's happening in real time, so I can predict the greater impact of these causalities on the future generations of the impacted individuals and or societies.
@Linda_92c
02/21/2025 - 8:41 AMHi there, I have some remarkable news that will lift your spirits!
@jarrodyuki7081
02/21/2025 - 8:41 AMYes!!!!!!!!!
@techteampxla2950
02/21/2025 - 8:41 AMOmg I just got an idea for a new sci fi movie β¦ βEternal travelerβ . Some one figured out how to fly near the speed of light and communicate back to earth. From his point of view time barely goes by , and he figures out ways to translate the messages through time so they are not time dilatedβ¦. π
@reckiuh
02/21/2025 - 8:41 AM1.25x speed
@user-iksd0713
02/21/2025 - 8:41 AMλ΄κ° κ³ λ±νκ΅ λ μ΅λν κ³Όνμ§μμ μ°μ£Όκ³΅κ°μ μμλ‘ μ΄λ£¨μ΄μ Έ μμΌλ©° μμ μ μ 체 μμ μ μ 체 μ§λ보쑴μ λ²μΉμ΄ κΈ°λ³Έλ²μΉμ΄λ€ μ€λ ₯ λΉ λ± λ°°κ²½λ³΅μ¬ ν½μ°½ λ± μ무κ²λ μΌμ΄λμ§ μμΌλ©° μμ μκΈ°λ ₯μΌλ‘ μμ§μΈλ€ μ΄κ²μ΄ μν μλμ§λ€ μκΈ°μ₯μ΄ μλ λ¬Όμ§μ΄ νμ μ νκ² λλ©΄ λ΄λΆμ μλ ₯μΌλ‘ μ΄μ΄ λ°μνλ©΄ μ§κ΅¬μ μ©μ νμμ νμΌ μ½λ‘λ νμν νμ κ³Ό κ°μ νμμ΄ μΌμ΄λκ³ μκΈ°μ₯μ μκΈ°μ₯μ κ°λκΈ°λ‘ νκ³ μμΌλ©° λΈλνμ μ€μ¬μ λ©νλ¬Όμ§κ³Ό κ°μ μνλ¬Όμ§μ΄ μκΈ°λ©° νλ°μ μμΌλ νλ°νκ²λλ©΄ κ·Ήμ§λ°©μΌλ‘ λΉ μ λκ°λ€ κ·Έλ¦¬κ³ λ¬κ³Ό νμ±μ μ΄μμ μΆ©λ νμ μ΄ λ§μ κ²μ 보면 μκΈ°μ₯μ μ°¨μ΄μ΄λ©° μ μν μ ν λλ μ΄μμ λ°μ΄λ΄λ μμ νμμ΄ μκΈ°λ©΄ μΆ©λλ‘ μ΄μ΄μ§λ€ 곡룑μ λ©Έμ’ μ λΆλ₯Έ μ΄μμ μΆ©λμ μκΈ°μ₯μ΄ μμ μΆμ λ³νλ‘ μΌμ΄λκ³ λμλ¬Όμ μ§νμμ λλ¬Όμ μ§νλ λνμ μμμ΄ μ§νλ₯Ό 보μ¬μ€λ€ λλ¬Όκ·Ήκ³Ό μλ¬Όκ·Ήμ μ°¨μ΄λ‘ λλ¬Όμ μ§νλ κ²°μ λλ€ κ³΅λ£‘μ μμ λ ΈμΆλ κ²μΌλ‘ λμ μμΌλ©° κ·Έλ¬λ©΄ νΈμ΄ μμ΄μΌ λΆνλ₯Ό ν μμμΌλ 볡μλ κ³΅λ£‘μ΄ νΈμ΄ μλ μ’ λ₯λ νλλ μλ€ μΈλ₯μ μ§νλ μ μΈμμμ μμλ κ²μ΄ μλλΌ μΈ λ₯λΌλ κ³ μ μ μ’ μμ μμλ κ²μ΄λ€ μ νλ°λ₯μ λμ μ§λ₯μ κ°μ§κ²μ μ νλ°λ₯μ νΉμ§μ΄λ©° μ§κ΅¬μμ μ΅κ³ μ ν¬μμλ‘ μ리맀κΉν μλ₯Ό 보μ¬μ€λ€ μΈλ₯μ μμμνκ° μ’μμ§μκΈ°λ λ Ήμ νλͺ μ λ§μ΄ νλ©΄μ μμμνκ° μ’μμ§ κ²μ΄λ€ κ·Έλ¦¬κ³ μμΈνμ΅ κ·ΌμΉνΌμ κ·Όλμλ νν΄μ‘μΌλ©° μ΄λ¬ν κ²°κ³Όλ μ μ λ³μ λ¬κ³ μ΄μμΌλ©° μ 골λ‘λ§ νλ¨νλ κ²μ μ€λ₯λ€ ν°λ¨Έλ¦¬ μ€νΈλ μ€ λ©λΌλ κ³Όμ°ν μμ μ΄κ²μ ν°λ¨Έλ¦¬κ° λλ μ£Όμ μμΈμ΄λ€ κ·Έλ¬λ μ΄κ²μ λ©΄μκ³Ό ν¨μμ μν κ²μ΄λ©° κ·Έλ¬λ μΈκ°μ μνμ μμΈλ§ μμ§ κ³Όμ κ³Ό κ²°κ³Όλ λͺ¨λ₯Έλ€ λ©΄μκ³Ό ν¨μκ° μ΄λ»κ² μΌμ΄λλμ§ μμ νμ§ λͺ»νλ€ μ€νΈλ μ€λ μ₯λ₯Ό ν΅ν΄μ κ°μ€μ μ κΈ°μκ·ΉμΌλ‘ μ€νΈλ μ€λ₯Ό μ£Όλ©΄ λͺ¨λ μμλ€μ μ μ λλ€ μλ¬Όμ΄ κ΄ν©μ±μ νλ©΄ μμλΆμ΄ λλΆλΆ ν μμ λΏλ €μ§λ€ λΏλ¦¬μ ARF7 λ¬Όμ§μ μ κ±°νλ©΄ μλΆμ κ°μ§νμ§ λͺ»νλ€ μ΄κ²μ νν λ°μκ³Ό ννλ¬Όμ§μ μμ©μ΄λ€ μ΄κ²λ μ€λͺ νμ§ λͺ»νλ€ λμλ¬Όμ 꼬리μλ μ μμ 꼬리μλ μ μλ‘ μμ μ νλ©° μ΄λ₯λ λΆμ μ± μ΄λ₯λ μ±μ νμ νλ©° μ μμ± μ΄λ₯λ λνλ μ±μ΄ μ ν΄μ§λ€ μ±μ΄ μ ν΄μ§μ λΉ‘μ μλ μ΄μ κ° μλ€ κ·Έλ¬λ λ΅μ μμ νμ§ λͺ»νλ€ μμ μνμ μ€νμ μ μκΈ°νμ μν΄μ μν₯μ λ°μΌλ©° μ€μ²©κ³Ό μ½νμμ μ½νμ λ°λ¬Όμ§μ΄λ©° μ νλ₯Ό κ³μ°ν μ μλ€ μ μμ±κ³Ό νλμ±μ λμμ λ³Όμμλ κ²μ΄ ν΅μ°λ£ μμ‘°μ μ μ΄λ΄μ νΈλ₯ΈλΉμ΄ λλ νμμ΄λ€ μμμ λΆνμ μ±μ μ리μ κ°μ μμμ 보μ΄μ§ μλ λ―Έμ λΆμ μμ μνμ΄ μλλΌ λμμ λμ μ² νμ λ¬΄κ·Ήμ΄ νκ·Ήμ΄μ νκ·Ήμ΄ λ¬΄κ·Ήμ΄μ λ νκ΄μμ μμ λλ©΄μ 보μ΄λ μμμν λ―Έμμ μΈ μμμν κ±°μμ μΈ μμ μκΈ°λ ₯μ 보μ¬μ€λ€ μμ μ»΄ν¨ν°λ μμμ μ리λ₯Ό μμμΌ ν κ²μ΄λ€ μΌλ° μ»΄ν¨ν°λ μμ μ»΄ν¨ν°μ ν¨κ³Όλ₯Ό λΌμμλ€ μ΄κ²λΏλ§ μλλΌ μΈκ°μ΄ λ§λ μ΅κ³ μ νλ°λ¬Όμ μνμ΄λ€ κ³Όκ±°μ μνμ μ°λ΄λμ΄ μ£Όμλ£λ‘ μ¬μ©λ κ²μ΄λΌλ©΄ νλλ κΈ°νμ λ§ μ°λ΄λμ΄κ³ μ£Όμλ£λ μμλ€ μ΄κ²μ μ°λ΄λ 기체 ννμλ μλ₯ν κΈμ΄λ€ μλ₯΄κ³€ κ°μ€κ° μ°λ΄λ κΈ°μ²΄λ€ μ¬κΈ°μ λ μ’ λ₯μ 기체λ₯Ό 첨κ°νλ©΄ λ νΉν λ°μμ 보μ΄λλ° μμκ° μμ§ν λκΉμ§ λ°μνλ€ κ·Έλ¬λ 기체μ λ°μμ μμ νμ§ μλλ€ μ΄μ λ체λΌλ μ΄λ‘ μ΄ λμ¨μ§ λ°±λ μ΄ λμ΄λ 물리μ νΉμ±λ κ°λ λ λͺ¨λ₯Έλ€ μ€λΉνμ΄ 0μ΄κ³ μ κΈ°μ νμ΄ 0μ΄λ€ μ΄λ₯Ό μμ©νλ λ¬Όμ§μ΄ μ°λ΄λμΌμ΄ μλ€ νλΌμ¦λ§ μ΄μ λ체 μ°λ΄λμΌ μ§κ΅¬μ λ΄ν΅ μ©μ μκΈ°μ₯μ΄ κ°μ νμμ΄λ€ μ΄ νμμ λͺ¨λ κ²°ν©κ³Ό λ°μμ ν΅μΉνλ€ κ·Έλ¬λ μ€λͺ νμ§ μλλ€ ν λλΌμ κ΅λ°©μ ν곡λͺ¨ν¨μ λ¬λ €μλ€ μ΄ ν곡λͺ¨ν¨μ μ μΌ ν° λΉμ€μ μΊνννΈμ΄λ©° μμ¦κΈ°μμ΄λ μ μμμ΄λ λ¬Έμ κ° λ§λ€ μ μΌ μ μ λΉμ©μΌλ‘ ν μμλ λ°©λ²μ΄ νμ½μκ³Ό μ μμμ΄λ€ κ·Έλ¦¬κ³ μΈκ°μ ν΅μ¦μ λ€μ€λ¦¬λ λ΄λ μ΄ μ€ν© ν¨μμΈ κΉλκ³Ό κ²°ν©κ³Ό μ±λΆμ΄ λ³μ μμ©νλ μ리λ 무μμΌκΉ?
@tanveer_badar_
02/21/2025 - 8:41 AMAmazing visualizations!
@mudasirhussain-vx1kf
02/21/2025 - 8:41 AMJust waste of my timeπ’π’π’
@NG-we8uu
02/21/2025 - 8:41 AM1:15
@rv706
02/21/2025 - 8:41 AM"Using geometry rather than math"
As a person with a PhD in geometry (a branch of mathematics) that phrase sounded a bit weird… π
@LeafyTony
02/21/2025 - 8:41 AMwhy is space and time connected, why aren't they considered separate things?
@Danratman
02/21/2025 - 8:41 AMMatt was more buff back in 2018, the t-shirt gives it away, exercising the body and the mind simultaneously gives best results
@verslalchimie5824
02/21/2025 - 8:41 AMTheir is a flaw in the reasoning of simultaneity that is always being represented by when the light of two events reaches the observers. This is nonsense. This depends on the speed of the observer and the distance light has to travel. That's like saying an event portrayed on a movie screen occurs when the light from the screen reaches your eye. NO. The event occurred earlier on the screen, without observation. Events occur throughout the universe, and in an abstract sense, we can say two events can occur simultaneously AT THEIR SOURCE, independent of when their light reaches any observer.
@chavy2012
02/21/2025 - 8:41 AMI took Astronomy in undergrad because thought βoh funβ and then found out about all the chemistry and physicsβ¦.. only class Iβve ever failed in my college career π But I love this stuff! Would fail again for sure.
@0alalune0
02/21/2025 - 8:41 AMThis is such a great explanation. I didn't understand how light cones in different frames of reference worked but this is making things click!
@steveurkel1487
02/21/2025 - 8:41 AMYup casual word is bond
@bibsp3556
02/21/2025 - 8:41 AMI just go.back and forth through these videos, trying to get a little more, to re-evaluate with new knowledge, to better grasp this universe.
I'm obsessed with this subject, and wanted to be a science communicator so bad as a kid. Still time I spose. So jealous.
@derekboyt3383
02/21/2025 - 8:41 AMTIME DOES NOT EXIST. Itβs merely a measure of movement. Ask yourself – what is time.
Time only exists in the absence of space and the same is true for space only existing in the absence of time.
Now, there is a βplaceβ where both space and time both exist simultaneously and thatβs the event horizon. This barrier exists everywhere and is present at the quantum (atom) and cosmic (planet / star / galaxy / universe) scale.
Since we (humans) are made of trillions of atoms, we literally exist on this barrier between space and time. This is why we have the ability to perceive both space and time; however, we canβt truly perceive time because our senses are external to where time resides.
When I say time doesnβt exist, I mean that it doesnβt exist in our 3D universe.
This poses a very strange phenomenon. Why can we have consciousness across this space to time barrier. Well, the only thing that makes since is the molecules that govern this connection between the internal (singularity) and external (3D universe). This molecule is DNA and itβs twisted helical nature is seen at the atomic and cosmic scale. This is where we need to focus our science if we truly want to understand everything. It will take us into the internal by examining the external dynamic properties.
@Mai_228
02/21/2025 - 8:41 AMProcrastinating studying for my relativity exam by watching relativity videos on YouTube hoping to find a reference frame for a timelike interval where procrastination causes good grades π
@dnaphysics
02/21/2025 - 8:41 AMSo traveling faster than light you'd get to see people hitting their thumb with a hammer because it hurt, and eggs being dropped because they cracked?
@blackwall619
02/21/2025 - 8:41 AMI am so going to use this when I'm late for work!!!!
Or early.
@KartikPatel-nt4ff
02/21/2025 - 8:41 AMπ ππ π well information good show π