@neildegrassetyson: Could another Earth exist somewhere beyond our observable universe? Theoretical physicist Janna Levin explores the possibilities of the multiverse on In Theory, a StarTalk limited series confronting the frontiers of our understanding link in bio🔗to watch Ep 1 of In Theory #StarTalk #InTheory #Cosmos #Multiverse#Universe

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Tuesday 03 November 2026 17:00:00 GMT
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eternallygratefultojesus
Arthur :
We know the universe is not infinite and it was the Big Bang itself that proved this. The universe had a beginning which means by definition it is finite. We also know it’s expanding which is another way we can know this.
2026-11-06 14:15:58
1
atoms.and.sky
Atoms and Sky :
If fundamental particles mark the smallest that small can be, then the universe cannot be infinite in size. They suggest a limit to largeness as well.
2026-11-05 20:07:54
1
caleb_ngugi
Caziel - Website Dev 🇰🇪 :
Might be impossible to see the whole picture when we're just one of the puzzle pieces
2026-11-06 09:40:00
1
aenayushwhite
Aenayus White :
I don't buy the big bang it's a cop out didn't Einstein say u can't creat or destroy energy just transfer it by that logic this can't b a thing
2026-11-07 02:23:31
0
.2amshopper
.2amShopper :
I find it so deeply disturbing that I'll never know what all of this means, where all of this came from, that I try not to think about it
2026-11-03 17:09:32
32
deeloo19
Devin Lau :
Our mind might reach there, just never physically get there at this time, it’s almost superstitious
2026-11-06 20:55:20
2
arseneron
Arsenon :
I’m in the Big Bang Gang 🥸
2026-11-05 13:26:35
1
papa_j0hn
John :
sad that I wont get to know
2026-11-03 17:05:09
4
aliencain
aliencain :
universe expanding into what? this presupposes a space allowing the universe to expand into it.
2026-11-03 21:43:17
1
user9208521153863
Amy :
I need to get on that theory show.
2026-11-03 17:02:53
95
lukez049
Luke Z :
But on the flip side is there any evidence out there that definitively 100% confirms that other universes besides our own do not exist?
2026-11-03 21:31:52
2
angelsprinkles1
ique :
How can one infinity be bigger than another infinity? 🤯 Off to Google I go research something else my brain isn’t going to comprehend 😂
2026-11-03 17:08:15
0
farzadadamkhazraee
Dr. Farzad A. khazraee :
Branes is the answer, and multiverse; excellent presentation. thank you for your prescence ✨✨✨
2026-11-03 22:17:40
2
st.dane
St.Dane :
Earth needs fires as a necessity. Why do you think that is?
2026-11-04 15:58:10
1
luigibertm.f.k.r
LuigibertM.F.K.R :
So a slightly less ugly version of me is somewhere out there?
2026-11-05 06:40:58
1
alier.moonlight
alier Moonlight :
Infinity becoming more infinite sounds like finite to me
2026-11-04 09:57:28
1
yebo3603
Yebo360 :
infinite cannot have a beginning by its very definition of no end.
2026-11-04 10:31:56
1
allsquiet99
John Dee Official :
One sun, one planet, one solar system, one galaxy… One universe? I doubt that.
2026-11-03 20:52:51
2
wx1_a
𝑨𝒍𝒆𝒙𝒂𝒏𝒅𝒆𝒓 :
I have some deep questions that have been occupying my mind. Who am I really? Am I my brain, my body, or my soul? If I am my mind, why can’t I consciously control my body’s biological processes, such as hormone levels, muscle growth, height, bone density, memory, healing, and reaction speed? If I am not my mind or my body, then what exactly am I? Is the mind an independent entity, or is it simply the result of brain activity? What is consciousness, how does it emerge, and why do we experience a sense of self? If I lose my memories, my personality changes, and my body changes over the years, what makes me the same person I was ten years ago? Is personal identity based on memory, the body, consciousness, or the soul? If scientists created an exact copy of my brain, body, memories, and personality, would that copy actually be me or another person who believes they are me? And if all my memories and personality could be transferred to another brain, would I move with them or remain in my original body? Moving beyond human existence, what are dark matter and dark energy, and why does most of the universe remain unexplained? What exists beyond the observable universe? Is the universe infinite, or does it have boundaries? Is everything in existence merely the result of physical and chemical processes? If everything follows physical laws, does that mean the universe will eventually come to an end? What could exist after the universe reaches its ultimate fate? Could there be other universes? Why does the universe exist instead of nothing? If everything has a cause, what is the ultimate cause of existence? Why do the laws of physics exist, and where did they come from? I would sincerely appreciate thoughtful answers from scientists, professors, philosophers, and researchers. I am looking for scientific, philosophical, and religious perspectives, and I want to understand what we actually know, what remains a hypothesis, and what is still a mystery.
2026-11-04 11:39:10
2
bobwilliams330
Bob Williams330 :
Infinity changes everything
2026-11-04 01:58:33
2
user15038196524217
user1503819652421 :
what if their are bubbles of universes with separate big bangs in a matrix of dark matter like cels with in a much larger body difrent dimensions 26 or more and difrent universes and the intelligences that emerge known and unknown evolves and this collective is how the multiverse learns about its self becoming more and more conscious of its internal and external it may not even se us as intelligent yet
2026-11-03 21:59:19
1
pauloh.manzotti
PHManzotti :
Somos pequenos gigantes cósmicos
2026-11-03 22:50:24
1
lemurs21
Lemurs :
There’s trillions of earths
2026-11-03 20:20:16
2
iamseaweedongod
SeaweedOngod :
This is what AGI gave us. A new reality to exist in/interact with. Infinite simulations folding in on themselves
2026-11-03 19:03:54
1
the.antihero
DarkenedHero :
If there is another you out there watching this show, do they count as aliens?
2026-11-03 23:04:42
2
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