Sabine Hossenfelder
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hossenfelder.bsky.social
Sabine Hossenfelder
@hossenfelder.bsky.social
German Physicist
The #1 most-wanted particle in physics is the graviton, a quantum of gravity. In a recent paper, a physicist came up with an ingenious experiment that could prove that gravitons do exist. Let’s take a look.

www.youtube.com/watch?v=qXwp...
We Thought This Particle Was Impossible To Measure!
YouTube video by Sabine Hossenfelder
www.youtube.com
January 4, 2026 at 4:05 PM
It’s a new year, and according to a new paper, physics is headed into a new era. Over the past few years, the field of physics has seen a major shift in research priorities – let’s take a look at that shift, why it’s happened, and where physics is headed next.

www.youtube.com/watch?v=iJWF...
It’s The End Of An Era For Physics.
YouTube video by Sabine Hossenfelder
www.youtube.com
January 1, 2026 at 4:04 PM
In today's video I explain why some physicists and computer scientists think that quantum computers will never properly work

www.youtube.com/watch?v=WeVG...
Why Quantum Computers might never work
YouTube video by Sabine Hossenfelder
www.youtube.com
December 31, 2025 at 4:06 PM
The clean energy breakthrough everyone missed.

www.youtube.com/watch?v=tl13...
The Clean Energy Breakthrough Everyone Missed
YouTube video by Sabine Hossenfelder
www.youtube.com
December 30, 2025 at 4:02 PM
Human brains are roughly 100,000 times more energy-efficient than current AI systems. So why don’t we build computers using human brain cells? Don’t worry, researchers are one step ahead of you there.

www.youtube.com/watch?v=gC_r...
Crazy: Scientists Compute With Human Brain Cells
YouTube video by Sabine Hossenfelder
www.youtube.com
December 28, 2025 at 4:07 PM
I have been alerted that black holes don’t exist, again. This isn’t the first time I have been asked to assess an argument which seems to prove that black holes aren’t real, but let’s take a look at all the new developments in this debate.

www.youtube.com/watch?v=3HJG...
Do Black Holes Exist? Some Physicists Don’t Think So
YouTube video by Sabine Hossenfelder
www.youtube.com
December 27, 2025 at 4:04 PM
Physicists have theorized for decades that chaos doesn’t just destroy order, it can also create it. This could in turn mean that the laws of nature that make our universe the way it is could be emergent from chaos.

www.youtube.com/watch?v=xDOV...
Yes, Chaos Can Create Order, New Experiment Shows
YouTube video by Sabine Hossenfelder
www.youtube.com
December 26, 2025 at 4:07 PM
In today's video, I have a look at the return of DC electricity.

www.youtube.com/watch?v=jFA4...
Are We Using the Wrong Kind Of Electricity?
YouTube video by Sabine Hossenfelder
www.youtube.com
December 25, 2025 at 8:07 AM
Wormholes are hypothetical tunnels in spacetime that appear in both Einstein’s theories and quantum physics. Recently, wormholes have been making a lot of headlines. Why is that?

www.youtube.com/watch?v=PwXa...
This Is Why Wormholes Are Making Headlines Right Now
YouTube video by Sabine Hossenfelder
www.youtube.com
December 23, 2025 at 4:03 PM
How close is AGI? In today's video I sum up what the experts say and what other data we have to go by.

www.youtube.com/watch?v=Z6q2...
Is AGI Coming In 2026?
YouTube video by Sabine Hossenfelder
www.youtube.com
December 22, 2025 at 4:04 PM
Scientists have talked about nanobots for 40 years, and according to headlines they’re almost ready for use in the medical field. Let’s take a look at how close we are to bringing the nanobots of sci-fi into reality and what those tiny “robots” actually look like.

www.youtube.com/watch?v=MQ9a...
Nanobots: The Truth Behind the Headlines
YouTube video by Sabine Hossenfelder
www.youtube.com
December 21, 2025 at 4:03 PM
Surprise: Free Will Needs Quantum Physics to Fail, Physicists Show

www.youtube.com/watch?v=VspN...
Surprise: Free Will Needs Quantum Physics to Fail, Physicists Show
YouTube video by Sabine Hossenfelder
www.youtube.com
December 20, 2025 at 4:03 PM
China Makes Breakthrough With Thorium Nuclear Reactor. Where is the West?
www.youtube.com/watch?v=mzJy...
China Makes Breakthrough With Thorium Nuclear Reactor. Where is the West?
YouTube video by Sabine Hossenfelder
www.youtube.com
December 18, 2025 at 4:02 PM
Reposted by Sabine Hossenfelder
😂 “it will only hurt your head moderately”
I love Sabine!
What is time? That question is hard to answer because it’s really asking a bunch of different questions. In today's video, I have a look at what physics has taught us about time.

www.youtube.com/watch?v=OjxZ...
What is time, really?
YouTube video by Sabine Hossenfelder
www.youtube.com
December 17, 2025 at 4:09 PM
What is time? That question is hard to answer because it’s really asking a bunch of different questions. In today's video, I have a look at what physics has taught us about time.

www.youtube.com/watch?v=OjxZ...
What is time, really?
YouTube video by Sabine Hossenfelder
www.youtube.com
December 17, 2025 at 4:07 PM
In a new paper, a former NASA scientist explains how we can engineer warp drives. I've had a look.

www.youtube.com/watch?v=Blfe...
Can Warp Drives Be Engineered? This Former NASA Researcher Thinks So
YouTube video by Sabine Hossenfelder
www.youtube.com
December 16, 2025 at 4:07 PM
I was on an interesting panel discussion about whether particles exist earlier this year, part of which is on YouTube now:

www.youtube.com/watch?v=wmWF...
Why particles might not exist | Sabine Hossenfelder, Hilary Lawson, Tim Maudlin
YouTube video by The Institute of Art and Ideas
www.youtube.com
December 16, 2025 at 8:47 AM
AI is changing the internet, dramatically. Where will this go?

www.youtube.com/watch?v=lPBw...
AI Is Breaking The Internet As We Know It
YouTube video by Sabine Hossenfelder
www.youtube.com
December 14, 2025 at 4:02 PM
Reposted by Sabine Hossenfelder
👇 sehenswerte Video zu den Probleme von KI-Rechenzentren im Weltraum wie dem hohen Aufwand für den Materialtransport sowie die Unmöglichkeit von Reparaturen. Darüber hinaus ist die Kühlung der GPUs eine Herausforderung, da die einfache Methode der Konvektion, ... 1/5
December 10, 2025 at 5:54 PM
Photonic computers are processors that use light – not electricity – to complete their calculations. They could get is to AGI quickly, so the promise. Does the technology live up to the hype? I've had a look.

www.youtube.com/watch?v=AmEW...
Speed-of-Light Computing Could Get Us to AGI Very Fast
YouTube video by Sabine Hossenfelder
www.youtube.com
December 13, 2025 at 4:06 PM
The universe is full of a seemingly unending number of different things, from subatomic particles to plants and animals to gas giants and supernovae. But where did all of this stuff (for lack of a better word) come from? Let’s take a look.

www.youtube.com/watch?v=Le_s...
Where does Everything come from?
YouTube video by Sabine Hossenfelder
www.youtube.com
December 11, 2025 at 4:06 PM
Data Centres in Space: Genius or Crazy?

www.youtube.com/watch?v=t8x0...
Big Tech Wants To Build Data Centers In Space: Does This Make Sense?
YouTube video by Sabine Hossenfelder
www.youtube.com
December 10, 2025 at 4:07 PM
A group of scientists claim that the origin of life for complex organisms on Earth might have occurred not once, but twice. However, their findings have been rather controversial.

www.youtube.com/watch?v=SSji...
New Fossils Suggest That Life On Earth Started Twice
YouTube video by Sabine Hossenfelder
www.youtube.com
December 8, 2025 at 4:02 PM
The next big thing in tech is almost here.

www.youtube.com/watch?v=O1_3...
The Next Big Thing in Tech is Almost Here
YouTube video by Sabine Hossenfelder
www.youtube.com
December 7, 2025 at 4:02 PM
It seems that physics doesn't need imaginary numbers after all.

www.youtube.com/watch?v=OPer...
Reality Doesn’t Need Complex Numbers, Physicists Prove
YouTube video by Sabine Hossenfelder
www.youtube.com
December 7, 2025 at 5:30 AM