Physics Gets Weird at the End of the Universe

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Credits
Writer: David Shlivko
Editor: Frame Forge
Thumbnail Designer: Peter Sheppard
Producer: Alex McColgan/ Raquel Taylor

NASA/ESO/ESA

#Astrum #Astronomy #Space #physics #universe #darkmatter

[tedforsstromjacobsson]

I gotta say that as a dummy with no knowledge of physics at all this was one of the best explanations and visualizations I’ve seen of larger concepts like this. Great job in every way.

[kryzethx]

Big Crunch/Bounce sounds the most fun; everything that was moving away from us will begin to move closer, giving us a greater chance to find intelligent alien life out there

[carpemkarzi]

I love how we are a point in scientific history that we are solidly in the ‘shoulder shrug, chuck theoretical spaghetti at the white board’ stage. We know enough to know there are gaps in our theories, but not quite enough to see what’s missing. I am not being sarcastic, this is all just fantastic.

[mduftube]

It’s strange, but it’s a bit saddening to think of a time when nothing outside our own galaxy will be observable ever again, even though that will be incomprehensibly far in the future. But it also makes you wonder what we can’t see in our own time - how much is out there that we have no way of detecting?

[asymdelegate]

In light of this information I have started storing carrots.

[Michiel_de_Jong]

_"Finally_ _I_ _understand_ _the_ _feelings_ _of_ _the_ _few._ _Ashes_ _and_ _diamonds, _ _foe_ _and_ _friend, _ _we're_ _all_ _equal_ _in_ _the_ _end."_

[bewilderbeestie]

You forgot a bit regarding the Big Freeze: just because everything's at a thermodynamic equilibrium, quantum effects still apply. You still get virtual particles appearing and disappearing. The more complex the particle, the lower the probability, but the probability never becomes zero --- which means that if you wait long enough, macroscopic objects start appearing out of the vacuum. You have to wait really ridiculous lengths of time before anything interesting appears, but nothing's happening; you literally have an infinite amount of time available. Objects of the same complexity as a human start appearing every 10^10^50 years (yes, that's 10 to the power of 10^50); go look up the Boltzmann Brain concept if you want to have trouble sleeping.

But it gets even weirder. Particles with enough energy to form a new monobloc, that is, a new Big Bang causing a universe appear every 10^10^10^56 years. As there are only about 10^10^115 possible universes, almost immediately (on these timescales!) you reach a point where _every single possible universe_ has been created. And each one of those expands, reaches its own Big Freeze, and starts spawning universes of its own...

[QuantumlyImmortal]

MelodySheep's best video is about how the universe will end and even includes Alex's voiceovers for the majority. Truly amazing video highly recommend.

[MawGinBoo]

“Future astronomers might have no idea that anything ever existed beyond the Milky Way”

It’s poetic, in a way, as we used to think the Milky Way was all there is

[JavierSalcedoC]

you might be a tiny part of the universe, but the universe is incomplete without you

[thirstyCactus]

I've always liked the idea of the Big Bounce. It's much less scary to me. Circle of life. New beginnings. etc... Before the discovery of the accelerating universe, I had just assumed that the universe would eventually collapse from gravity and crunch into another Big Bang.

[tsogobauggi]

This is the end, my only friend, the end.

[mlgodzilla]

It ends when someone finishes, and starts a new save file.

[julia-]

It's when someone's mom turns off their giant computer. "Get to school, son." "Aw... mom."

[b-ranthatway]

I always think about all the problems I have during my life, but whenever I listen to channels like I feel so insignificant in the grand scale of what the universe is going through 😅
Thanks for always distracting me and putting me to sleep. 👌

[scottcampbell]

I've put "fix the end of the universe problem" into my calendar for a million years from now. If I am still around then, maybe I should start worrying about it.

[jonahbrown]

Imagine being a awarded PhD physicist and having to explain to your family at Thanksgiving "I've recently began exploring the math behind dark matter's cosmic anti-friction and how it impacts the likelihood of the universe ending in The Big Bounce"

[quarkcypher]

I like the big bounce. A cyclical universe sounds good to me. Irrelevant to us though as our species won't exist to see what the distant future holds.

[Ruben-lidt]

Could 'Dark Energy' just be a 'geologic shadow' of a preveous cycle?

[Brian-nwbn]

For the algorithm!

Love your content mate, just wanted to leave a little affirmation of appreciation and admiration I and so many of us have for your content Alex. Both enthralling, inspirational, aw inspiring, and soothing to fall asleep to, your channel is truly one of the great ones. I’m sure you already know that but I just wanted to say it anyway..

God speed !