Sabine Hossenfelder
@hossenfelder.bsky.social
15K followers 39 following 270 posts
German Physicist
Posts Media Videos Starter Packs
hossenfelder.bsky.social
The 2025 Physics Nobel Prize was awarded for macroscopic quantum tunneling. What is this and what is it good for? I have a brief summary.

www.youtube.com/watch?v=Rgjz...
The 2025 Physics Nobel Prize: Macroscopic Quantum Tunneling
YouTube video by Sabine Hossenfelder
www.youtube.com
hossenfelder.bsky.social
In today's video I have a look at Bryan Johnson's quest for longevity and his philosophy of life. It's much stranger than you might think and is all about what comes after the artificial intelligence revolution.

www.youtube.com/watch?v=dndw...
Don’t Die: The Philosophy That Breaks Capitalism
YouTube video by Sabine Hossenfelder
www.youtube.com
hossenfelder.bsky.social
Today I look at the five biggest problems in physics, what their status is, and how long it will take to solve them: quantum gravity, dark matter, dark energy, the origin of the universe, and a theory of everything.

www.youtube.com/watch?v=I7Sb...
How long will it take to solve the 5 big physics problems?
YouTube video by Sabine Hossenfelder
www.youtube.com
hossenfelder.bsky.social
Organized fraud is spreading in science, and today I have some recent stories that document this is becoming a global problem which has now reached Europe. America, brace yourself, soon this will hit you, too.

www.youtube.com/watch?v=fBH0...
Science Scams are Spreading
YouTube video by Sabine Hossenfelder
www.youtube.com
hossenfelder.bsky.social
In today’s video I explain why I strongly doubt that quantum computing will ever have a sensible return on investment.

www.youtube.com/watch?v=MukM...
In which I lose faith in quantum computing
YouTube video by Sabine Hossenfelder
www.youtube.com
hossenfelder.bsky.social
People in Western countries are having fewer kids, making politicians worried about the future of their nations’ populations. Let’s take a look at how bad the problem is, what governments are doing to fix it, and why it’s happening.

www.youtube.com/watch?v=j2tz...
Why People Aren’t Having Kids & How To Fix It
YouTube video by Sabine Hossenfelder
www.youtube.com
hossenfelder.bsky.social
In a new study, material scientists report they have created liquid time crystals, opening up new possibilities for practical applications of the fascinating phenomenon. Let’s take a look.

www.youtube.com/watch?v=2sxp...
This New Time Crystal Runs on Light
YouTube video by Sabine Hossenfelder
www.youtube.com
hossenfelder.bsky.social
In a recent press release, physicists claim that a super-cleaned version of graphene breaks a fundamental law of nature and could even be used to somehow study black holes. Sounds intriguing, let’s take a look.

www.youtube.com/watch?v=RuCi...
Did Graphene Just Break A Fundamental Law?
YouTube video by Sabine Hossenfelder
www.youtube.com
hossenfelder.bsky.social
I recently made a video about 10 physics myths, and a lot of you asked that I do another one about quantum myths in particular. Let’s take a look.

www.youtube.com/watch?v=rBKc...
10 Quantum Myths, Debunked
YouTube video by Sabine Hossenfelder
www.youtube.com
hossenfelder.bsky.social
A group of physicists say they have figured out why our Sun does not have superflares, like other stars of its type. It’s not that we have just been lucky so far. They say it’s because our solar system’s planets protect us.
www.youtube.com/watch?v=6r5Z...
The sun could kill us. We might finally know why it doesn't.
YouTube video by Sabine Hossenfelder
www.youtube.com
hossenfelder.bsky.social
Our universe started with an incredibly rapid phase of expansion, called “inflation,” but physicists are still unsure what caused the rapid expansion and why it stopped. In a new paper, researchers say they’ve come up with an elegant new explanation.

www.youtube.com/watch?v=jf6I...
Why is the Universe so Big? These physicists say they know
YouTube video by Sabine Hossenfelder
www.youtube.com
hossenfelder.bsky.social
A group of physicists claim they have proof that true randomness exists. This has implications for encryption protocols and computing, but (if true) would also indicate that the past does not determine the present.

www.youtube.com/watch?v=9uk7...
Did These Physicists Just Prove True Randomness?
YouTube video by Sabine Hossenfelder
www.youtube.com
hossenfelder.bsky.social
One of the key questions for predicting the impact of Artificial Intelligence is whether we will see a “slow takeoff” or a “fast takeoff”. In today’s video I have a look at what various forecasts say.

www.youtube.com/watch?v=7krR...
How fast will AI change Everything?
YouTube video by Sabine Hossenfelder
www.youtube.com
hossenfelder.bsky.social
Can two different theories of physics both accurately explain the same phenomenon? The answer in some cases is yes. In physics, this is called a duality, and it raises the question of why we choose one theory over another.
www.youtube.com/watch?v=wh5N...
There’s Another Way to See Reality. It’s Just as True.
YouTube video by Sabine Hossenfelder
www.youtube.com