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Theories of Everything with Curt Jaimungal

Jenny Wagner: What If We've Been Wrong About Dark Matter For Decades?

3/26/20262 hr 38 min

Jenny Wagner examines the inverse problem: how to map dark matter without assuming what it is.

What if 85% of the universe's matter isn't missing — it's just that our models were never clean enough to know? Dr. Jenny Wagner proves mathematically that every dark matter map ever made is extrapolation. The data only tells you something local. Everything else is a model assumption wearing the costume of evidence. She then connects this to Einstein's own 1917 warning — that homogeneity and isotropy were always a placeholder, never a truth — and makes the case that cosmology is not in crisis. It's finally ready...

Clips

Showing 10 of 11
Dare Not To Know
Evidence Is Model-Driven
Only Local Information Exists
Data Local, Maps Extrapolated
Thirty-Year Aha Moment
Revisiting The Bullet Cluster
Forward Is Easy, Inverse Is Hard
Models Everywhere, No Particle
Penrose Rings? Jury’s Out
Why AI Struggles In Cosmology

Transcript preview

First 90 seconds

  1. Speaker 10:00

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  2. Jenny Wagner· Guest0:29

    I saw the equations, and suddenly, this is my gravitational lensing problem. He just said, "Oh, finally, you got it," 30 years after we found out, and it was quite astonishing how disruptive you think something could be.

  3. Curt Jaimungal· Host0:44

    Dark matter. 85% of the universe's matter is supposedly missing. But what's the technical truth behind the popular science headlines? Dr. Jenny Wagner, a scientist at the Institute of Astronomy and Astrophysics and the Helsinki Institute of Physics, and winner of the Prize for Courageous Science, disagrees about how we got that number. This is because she proved mathematically that most of what we call evidence for dark matter is driven by the models we insert, and not the data we collect. On this channel, I, Curt Jaimungal, interview researchers regarding their theories of reality with rigor and technical depth. Today's episode is no different. Wagner found that when you strip out the model's

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