96 | Lina Necib on What and Where the Dark Matter Is

96 | Lina Necib on What and Where the Dark Matter Is

The past few centuries of scientific progress have displaced humanity from the center of it all: the Earth is not at the middle of the Solar System, the Sun is but one star in a large galaxy, there are trillions of galaxies, and so on. Now we know that we're not even made of the same stuff as most of the universe; for every amount of ordinary atoms and other known particles, there is five times as much dark matter, some kind of stuff we haven't identified in laboratory experiments. But we do know a great deal about the behavior of dark matter. I talk with Lina Necib about why we think there's dark matter, what it might be, and how it's distributed in the galaxy. The latter question has seen enormous recent progress, especially from high-precision measurements of the distribution of stars in the Milky Way.

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Lina Necib received her Ph.D. in physics from the Massachusetts Institute of Technology. She is currently a Sherman Fairchild Postdoctoral Scholar in Theoretical Physics at Caltech, and will be an Assistant Professor of Physics at MIT starting in the fall. Her research spans issues in particle physics and astrophysics, especially concerning the nature and distribution of dark matter, as well as techniques for detecting it and constraining its properties.


Jaksot(415)

303 | James P. Allison on Fighting Cancer with the Immune System

303 | James P. Allison on Fighting Cancer with the Immune System

A typical human lifespan is approximately three billion heartbeats in duration. Lasting that long requires not only intrinsic stability, but an impressive capacity for self-repair. Nevertheless, thing...

27 Tammi 20251h 7min

302 | Chris Kempes on the Biophysics of Evolution

302 | Chris Kempes on the Biophysics of Evolution

Randomness plays an important role in the evolution of life (as my evil twin will tell you). But random doesn't mean arbitrary. Biological organisms are physical objects, after all, and subject to the...

20 Tammi 20251h 30min

301 | Tina Eliassi-Rad on Al, Networks, and Epistemic Instability

301 | Tina Eliassi-Rad on Al, Networks, and Epistemic Instability

Big data is ruling, or at least deeply infiltrating, all of modern existence. Unprecedented capacity for collecting and analyzing large amounts of data have given us a new generation of artificial int...

13 Tammi 20251h 9min

300 | Solo: Does Time Exist?

300 | Solo: Does Time Exist?

A new year, and a new centennial -- 300 (regularly-numbered) episodes of Mindscape! Our tradition is to have a solo episode, and what better topic than the nature of time? Physicists and philosophers ...

6 Tammi 20252h 11min

Holiday Message | Hits and Misses

Holiday Message | Hits and Misses

It's the end of the year, and time for our annual holiday break here at Mindscape. But as usual, we wrap up with a Holiday Message. This year, inspired by Joni Mitchell's "Hits" and "Misses" albums, I...

23 Joulu 20242h 1min

299 | Michael Wong on Information, Function, and the Origin of Life

299 | Michael Wong on Information, Function, and the Origin of Life

Living organisms seem exquisitely organized and complex, with features clearly adapted to serving certain functions needed to survive and procreate. Natural selection provides a compelling explanation...

16 Joulu 20241h 13min

298 | Jeff Lichtman on the Wiring Diagram of the Brain

298 | Jeff Lichtman on the Wiring Diagram of the Brain

The number of neurons in the human brain is comparable to the number of stars in the Milky Way galaxy. Unlike the stars, however, in the case of neurons the real action is in how they are directly con...

9 Joulu 20241h 9min

AMA | December 2024

AMA | December 2024

Welcome to the December 2024 Ask Me Anything episode of Mindscape! These monthly excursions are funded by Patreon supporters (who are also the ones asking the questions). We take questions asked by Pa...

2 Joulu 20243h 55min

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