StarTalk

Multiverses, In Theory… with Janna Levin

111K views · 1d ago · 15:54

Guest: Janna Levin

Janna Levin explores multiverses... in theory. In the first installment of this series, Janna breaks down the different theories of the multiverse. From an infinite universe, to multiple big bangs, to the many worlds theory, uncover the bleeding edge of astrophysics theory on whether ours is the only universe.

Topics: Multiverses...In Theory · Are We The Only Universe? · What Do We Mean by Universe? · In the Beginning... · How to Make a Multiverse · From Nothing to Something

Introducing… In Theory with Janna Levin

448K views · 3d ago · 40:47

Guest: Janna Levin

If something is possible, has the universe tried it? Are all physical possibilities inevitable? Neil deGrasse Tyson sits down with theoretical astrophysicist Janna Levin to launch “In Theory,” a new StarTalk series celebrating the weird, wacky theories of the universe and the theorists who chase them. Out on YouTube October 29, 2026!

Topics: Is the Universe Trying Every Experiment? · The Multiverse Deposing Us from the Center · Dark Matter Scientists Studying Us · The Stuff That No One Saw Coming · The Black Hole Solution · Everything is Conceivable

The Science of Looksmaxxing, with Doc Noc

865K views · 6d ago · 1:01:05

Guest: Doc Noc

Are we doing more harm than good in the pursuit of perfection? Neil deGrasse Tyson, comic co-hosts Chuck Nice and Gary O'Reilly explore looksmaxxing, peptides, body composition, and the scientization of health & beauty trends with pharmaceutical scientist & medfluencer Morgan McSweeney, aka Dr. Noc.

Topics: Is GLP-1s the Ultimate Quick Fix? · What is a Peptide? · Nailing Your Body Composition · Peptide Stacking · The Risks of Peptide Injections · The Scientific Cure All

You Probably Don’t Realize How Big A Trillion Is

1.2M views · 1w ago · 10:39

How big is a trillion? Neil deGrasse Tyson and Chuck Nice put billions and trillions into perspective. How many times could a trillion dollars laid end to end wrap around the world? What was happening a trillion seconds ago? And does Elon Musk have more dollars or more brain neurons?

Topics: How Big a Trillion Is · A Trillion Seconds · A Trillion Dollars · Neurons, GDP, and Galaxies · The Value of Money · More Dollars Than Neurons

Is Chemistry the Same Throughout the Universe? With Kate the Chemist

541K views · 1w ago · 43:08

Guest: Kate Biberdorf

Would aliens use the same periodic table as us? Neil deGrasse Tyson and comic co-host Negin Farsad sit down with Kate Biberdorf, aka Kate the Chemist, to tackle fan questions about the chemistry of life, diamonds, how fire works, and spontaneous combustion.

Topics: Could You Have Liquid Diamond? · Do Crystals Have Energy? · The Chemistry of Life in the Universe · Do Aliens Have the Same Periodic Table? · Is Water Necessary for Life? · The Fire Triangle

How We’ll Get to Alpha-Centauri | Cosmic Queries #115

847K views · 2w ago · 1:00:15

If the multiverse exists, where does our universe end and another begin? Neil deGrasse Tyson and comic co-host Chuck Nice tackle a wide-ranging grab bag of fan questions covering bubble universes, the nature of now, fractals, Hoag's Object, and more.

Topics: Where Our Universe Ends and Another Begins · Favorite & Least Favorite Science Words · Getting to Alpha Centauri · Is There a “Real” Now? · Visualizing Gravity · Hoag’s Object

Why We Haven’t Reached Superintelligence, with David Krakauer

1.7M views · 2w ago · 1:17:50

Guest: David Krakauer

Why did intelligence evolve in the universe? Neil deGrasse Tyson, Chuck Nice, and Gary O’Reilly explore the nature of intelligence, information theory, consciousness, and whether AI is actually intelligent at all with David Krakauer, evolutionary biologist and president of the Santa Fe Institute.

Topics: The Evolution of Intelligence · Collective Intelligence · When Communication Becomes Language · Did Intelligence Predate Language? · Intelligence v. Consciousness · The Perplexity of the Subconscious Mind

The Biggest El Niño in Recorded History

5.3M views · 3w ago · 19:06

What is a super el niño? Neil deGrasse Tyson and Chuck Nice sit down with climate scientist Adam Sobel to break down what to expect from this El Niño and what makes this one historically big. Timestamps Order Take Me to Your Leader here

Topics: What is El Niño? · THE SUPER EL NIÑO · How it Changes the Weather · Why Does It Happen? · Does Climate Change Affect El Niño? · Modelling Predictions

Inside the Search for Extra Dimensions, with Lara Anderson

1.5M views · 3w ago · 54:21

Guest: Lara Anderson

Why does string theory need ten dimensions? Neil deGrasse Tyson and comic co-host Jordan Klepper sit down with Lara Anderson, string theorist and associate professor of physics at Virginia Tech, to tackle intersecting dimensions, the nature of gravity, and a unified field theory.

Topics: The Higgs Boson · Will String Theory Deliver? · What Is a String? · Visualizing Higher Dimensions · How could a string accomplish anything? · Are Black Holes Higher Dimensional Objects Intersecting Spacetime?

Did AI Solve One of Math’s Hardest Problems?

8.7M views · 4w ago · 21:22

What’s with AI solving the Navier-Stokes Equation? Neil deGrass Tyson breaks down what the equation is and the controversy surrounding the solution with the help of astrophysicist Mordecai-Mark Mac Low. Timestamps Order Take Me to Your Leader here

Topics: What is the Navier-Stokes Equation? · Turbulent Fluid Dynamics · AI Solved The Millenium Problems · What the AI Solution is Missing · AI in Reasearch

Why Humans May Never Leave the Solar System, with Charles Liu

1.5M views · 1mo ago · 59:47

Guest: Charles Liu

Do the fractal nature of the universe and the human brain have anything to do with each other? Neil deGrasse Tyson and co-hosts Chuck Nice and Gary O’Reilly welcome back Geek-In-Chief Charles Liu, for a grab bag covering deep space travel, fractal mathematics, multiverse theory, and what we might never know about the universe.

Topics: Could We Use Iron Man’s Arch Reactor to Travel the Universe? · Robot Space Travel · Fractal Patterns in the Universe & the Brain · Do Fractals Indicate Simulated Reality? · Is The Multiverse The Result of Apophenia? · Wavelengths Smaller Than a Planck Length

Neil Describes Why Some Elements Have Such Weird Names

826K views · 1mo ago · 22:28

Is there an island of stability beyond the current unstable elements? Neil deGrasse Tyson and Chuck Nice have more fun with elements, weird names, interesting uses, and all. How did they get their names? Timestamps Order Take Me to Your Leader here

Topics: The Ytterby Cave · Named After Planets · Name for Scientists · Sodium · Aluminum · Titanium

Why Do We Exist? With Hakeem Oluseyi

2.2M views · 1mo ago · 49:50

What is fundamental in the universe? Neil deGrasse Tyson and comic co-host Chuck Nice welcome back Hakeem Oluseyi to dive deep into cosmology, plasma physics, the origins of life, and some of the most provocative ideas in modern astrophysics.

Topics: What’s A Plasma? · Hakeem’s Nine Realms · SWAG · Could You Move Earth? · The Point Where Everything Is Fundamental · Astronauts on a Pulsar