@spaceaccordingtoskylar: The big bang theory really doesn’t have much to say about the big bang itself. So what actually does it say??? #astrophysics #cosmology #bigbang #Science #DidYouKnow
finally, someone else who thought differently. I always thought that, how do we know nothing was here before the big banger ?
2026-08-27 18:45:51
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Metatron :
The 'Big Bang' name came from mythologists trying to discredit it.
2026-06-05 18:35:47
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Logan :
Who says the universe has a beginning?
2026-06-05 18:51:59
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The Pancake Bunny :
What is the universe expanding into? That’s where my brain shorts out.
2026-06-06 02:41:06
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🐾🐺 Andalar the folf🦊🐾 :
Our whole universe was in a hot dense state then nearly 14 billion years ago expensions started
2026-06-05 20:37:27
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tiktokery :
in this context does the word "theory" mean the same thing as evolution "theory" ?
2026-06-06 03:10:45
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Scott Coon738 :
But I love the quote “ in the beginning there was nothing, then it exploded” so I’m sticking with my misunderstanding. 😂
2026-06-05 18:37:02
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Eugene D. Roberts :
Soooo basically you are admitting that we know nothing about the beginning!
2026-07-21 01:56:43
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Tezcatlipoca :
While your breakdown of the Big Bang avoids the common 'explosion into empty space' trope, eliding its role as the absolute physical reference point for modern observational cosmology misses the broader paradigm. The Big Bang is not merely a theoretical origin; it functions as the standard baseline (\(t = 0\)) against which the entire evolutionary timeline of physical matter, thermodynamic cooling, and cosmic structure is mapped.
Furthermore, characterizing the early universe in a way that minimizes radiative energy is physically inaccurate. The primordial universe was a high-energy, photon-dominated plasma. The issue wasn’t an absence of light, but rather a lack of photon mean free path due to Thomson scattering off free electrons.
When recombination occurred at roughly 380,000 years, those photons were liberated, creating the Cosmic Microwave Background (CMB🕯️). Instruments like the James Webb Space Telescope (JWST) are explicitly designed to hunt for the subsequent epoch—the 'Cosmic Dawn'—by capturing redshifted infrared photons from the very first Population III star-forming regions. By bypassing the Big Bang as our primary cosmic anchor and ignoring the fundamental role of early-universe photonics, we lose the exact empirical framework that telescopes use to trace how primordial physics evolved
2026-06-09 23:41:03
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Mountain Boy :
Just one question,
They say 'space' and 'time' started with the 'bang'.
The bang was a real, physical event. It was not the metaphysical event or imagination.
If there was no space and time, then WHERE does that bang took place? 😂
2026-07-21 07:13:40
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professorbombay :
I think you mean "our" universe, not "the" universe. Yes, to us our universe is 13.8 billions years old, but we'll never know what else there may be in the universe.
2026-07-22 22:17:19
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StevenErnest :
I think they used to say there was a Singularity at the beginning, but not anymore?
Also, now thinking that it was the beginning of OUR universe, but not ALL of existence. Our universe may be cycling. (I know that's an old idea.)
Love your vids!
2026-06-06 01:59:28
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Oreo_91 :
Why can’t we take a photo “above” or “below” our plane of our solar system
2026-07-06 19:59:22
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VforVanessa :
I like how creationists will say something couldn’t have come from nothing so it must have come from God. Where did God come from? He was always here…. So if God came from nothing why couldn’t the universe? Well it’s beyond our human compensation.
2026-06-06 06:26:32
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anti-orca club :
look I'm cool with this but why did it take physicists ~50 years to get from "the big bang explains everything and if you don't believe it shut up!" to "ok yeah we don't actually know"
2026-06-06 10:06:33
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DJOtisFunkmeyer :
If it’s just a description of how the universe has changed (not started), why are you saying that “the universe is 13.8 B years old” instead of “the big bang was 13.8B years ago” or “it’s been 13.8B years since the Big Bang”? Saying “the universe is 13.8B years old” is why people misunderstand that the Big Bang is the “beginning of the universe”
2026-06-07 12:28:49
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wesleymadness :
Why is it my fault that scientists didn't name it "most of the stuff used to be over there and warmer?"
2026-06-06 16:56:57
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Na Lusan :
and its a hyporhesis- or did I miss out the evidence??
2026-06-23 17:02:50
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jonah :
wait wait wait. I am not a science person so forgive me but...how can the universe have cooled over time if energy has to be conserved? it's not as though heat could radiate...away from the universe. that wouldn't even make sense.
2026-06-06 06:02:50
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pers3381 :
honest question, did it cool down because it expanded or did it cool down then expanded? 🤔
2026-06-05 18:32:50
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Tom :
The MOST important question: was the big bang…loud?
2026-06-05 20:52:22
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birdee25.5 :
But if it didn’t expand when it was hot? How would it expand when it cooled? That goes against science?
2026-07-02 08:54:16
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fernando87657 :
Imagine my surprise that the Barenaked Ladies themesong to the sitcom is scientifically accurate.
2026-06-06 16:14:47
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Mr Rusty :
Wasn't the age of the universe significantly revised recently?
2026-06-19 23:40:48
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