Skip to main content

Up Next

Black Hole Harmonics

Black Hole Harmonics

Season 5 Episode 35
13:11
Loop Quantum Gravity Explained

Loop Quantum Gravity Explained

Season 5 Episode 36
13:49
Is Time Travel Impossible?

Is Time Travel Impossible?

Season 5 Episode 37
12:33
Why We Might Be Alone in the Universe

Why We Might Be Alone in the Universe

Season 5 Episode 38
12:24
Does Life Need a Multiverse to Exist?

Does Life Need a Multiverse to Exist?

Season 5 Episode 39
13:09
Can You Observe a Typical Universe?

Can You Observe a Typical Universe?

Season 5 Episode 40
13:36
Is The Universe Finite?

Is The Universe Finite?

Season 5 Episode 41
12:25
The Doomsday Argument

The Doomsday Argument

Season 5 Episode 42
12:50
Do Black Holes Create New Universes?

Do Black Holes Create New Universes?

Season 5 Episode 43
12:24
How To Detect a Neutrino

How To Detect a Neutrino

Season 5 Episode 44
9:54
How To Capture Black Holes

How To Capture Black Holes

Season 5 Episode 45
12:02
What if Singularities DO NOT Exist?

What if Singularities DO NOT Exist?

Season 10 Episode 1
14:44
Back to Show
PBS Space Time

How Many Universes Are There?

Season 5 Episode 34

The universe is big, but it’s peanuts compared to the eternally inflating multiverse. But just how many universes are there? What are they like? And most importantly, what can they tell us about … aliens?

Sign up now for inspiring and thought-provoking media delivered straight to your inbox.
Season
Why Did Quantum Entanglement Win the Nobel Prize in Physics?
14:40
Quantum Entanglement reveals that the universe is stranger than we thought.
The Equation That Explains (Nearly) Everything!
15:29
We explain how The Standard Model of particle physics works!
The Real Possibility of Mapping Alien Planets!
14:59
This is the craziest proposal for an astrophysics mission that has a chance at happening.
Why Is 1/137 One of the Greatest Unsolved Problems
14:37
In physics, the Fine Structure Constant is one the strangest numbers.
Science of the James Webb Telescope Explained!
12:00
We explore all the cool facts of the James Webb Space Telescope.
Could the Higgs Boson Lead Us to Dark Matter?
13:42
In fact, the first tantalizing evidence is already in and we take a look.
What Makes The Strong Force Strong?
15:34
We dive into the weird world of quantum chromodynamics and the strong force.
What If Dark Energy is a New Quantum Field?
15:22
Let's explore Quintessence and find out what dark energy really is.
What Happens Inside a Proton?
15:15
What’s actually going on inside protons and neutrons?
How Many States Of Matter Are There?
13:14
Let’s see if we can figure it out states of matter together.
What If We Live in a Superdeterministic Universe?
15:00
Today we’re going to try to save reality - or at least realism.
Could We Decode Alien Physics?
14:25
How hard can it really be to decode alien physics and engineering?
Active loading indicator