2023-03-21

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AsapSCIENCE

A journey to the end of time with the 5 most likely ways the universe will be destroyed

Watch our podcast on "How the universe will end" with astrophysicist Katie Mack: https://youtu.be/JWekRJnv8QI

You can get "The End Of The Universe" song on all platforms now

Be sure to check out Katie Mack's book "The End Of Everything (Astrophysically Speaking)"

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INTRO

Welcome to the end of the universe.

Please fasten your galactic seatbelts as we explore the

5 Most Likely Cosmic Apocalypses

A...poca...lyp...si?

Existential dread and Euphoria can be found

Here and Here

In the inconsiderate vastness of space

Enjoy the ride

BIG CRUNCH

Universal Gravity

Falling fruit from apple tree

Though it is the weakest force

It just might kill all of us

Andromeda galaxy

Hurling at amazing speeds

The Milky Way pulling close

Colliding in a brilliant burst

But if you didn’t know

This violent destruction has got nothing on

The Big Crunch

The Big Bang blew it all apart

Flying fast and flying far

But gravity in its infinite range

Could lead to a directional change

Collapsing in on itself

Surfaces of stars igniting, ouch!

Explosions tear through stellar space

Hot plasma in your face

It’s The Big Crunch

Where nothing can survive

Densities and temperatures beyond measure

We’re going to die

More intense than the Big Bang

And if gravity doesn’t win

The opposite will soon begin

HEAT DEATH

Oh it’s getting kinda cold

Which is weird for a thing called a heat death

But the entropy’s only increasing

It’s gonna be slow devastation

Cause it turns out the rate of expansion

Is way faster than we once imagined

Distance galaxies wander and fade away

Darkness grows as we float ever isolated

All thanks to the cosmological constant of dark energy

Heat death, it’s a really cold

Heat death, yeah we’re all alone

Energy gradients fade away

Particles of matter all decay

It’s a

Heat Death, the arrow of time is gone

Heat Death, one giant cold heat

BIG RIP

Of course if dark energy is not constant we get 'phantom energy'

Which means we have an accelerating expansion at an increasing rate

Give us the Big Rip

Where gravity can’t keep up

Stars and planets are pulled apart

Atomic forces no longer hold

Molecules break apart

Atoms break down

Everything explodes into infinity away from everything else

And the fabric of space is ripped apart

VACUUM DECAY

Ever heard of the Higgs Field?

We’re talking Bosons getting revealed

Giving mass to our particles

Writing tons of articles

Giving us stability

Well this field seeks the lowest energy state

Like a ball rolling down a hill can’t wait

But if a lower potential exists

Say goodbye to our constants

Physics falls apart and we get

Vacuum Decay

We’re in a false vacuum

A false vacuum

The best data suggests we’re in a false vacuum

Evaporation of a black hole

Could trigger change that’s out of control

Entering the true low vacuum state

And a bubble it will make

Spreading all across the universe

But it’s impossible to see this moment coming

At the speed of light it’s moving, you ain’t running

The final apocalyptic cascade

Nature fully rearranged

Incinerating everything it’s

Vacuum Decay

We’re in a false vacuum

A false vacuum

The best data suggests we’re in a false vacuum

Vacuum Decay

We’re in a false vacuum

A false vacuum

The best data suggests we’re in a false vacuum

BOUNCE

There’s something awry here

An error or two

Either gravity’s broken

Or another dimension’s leaked through

Cause it’s weakness, the force

It just doesn’t add up

What if instead of just ours there are more?

Universes out in spacetime galore

Influencing, softly dancing

Ready to bounce

Ready to bounce

Oh these parallel branes are expanding to start

But then fate as it goes just can’t keep them apart

We’re obliterated as the scalar fields swing

Into radiation and restart the Big Bang

So what’s the world without you?

It ends but then it cycles on through

The universe born again new

So tell me what’s the world without you?

If another one’s bouncing in soon

Now I know some of you might be saying

“Gosh Mitch! All these possible endings,

It’s got me scared, should I be worried?”

Awh, don’t worry

Most of these are predicted to happen in billions of years, if ever

And if that has you saying

“Billions? But that makes me feel so small and insignificant”

Well…that’s because you are.

So what’s the world without you?

It ends but then it cycles on through

The universe born again new

So tell me what’s the world without you?

If another one’s bouncing in soon