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.


Episoder(416)

AMA | September 2023

AMA | September 2023

Welcome to the September 2023 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 P...

4 Sep 20234h 3min

248 | Yejin Choi on AI and Common Sense

248 | Yejin Choi on AI and Common Sense

Over the last year, AI large-language models (LLMs) like ChatGPT have demonstrated a remarkable ability to carry on human-like conversations in a variety of different concepts. But the way these LLMs ...

28 Aug 20231h 12min

247 | Samuel Bowles on Economics, Cooperation, and Inequality

247 | Samuel Bowles on Economics, Cooperation, and Inequality

Blog post with transcript: https://www.preposterousuniverse.com/podcast/2023/08/21/247-samuel-bowles-on-economics-cooperation-and-inequality/ Economics, much like thermodynamics, is a story of collect...

21 Aug 20231h 20min

246 | David Stuart on Time and Science in Maya Civilization

246 | David Stuart on Time and Science in Maya Civilization

You might remember the somewhat bizarre worries that swept through certain circles back in 2012, based on the end of the world being predicted by the Maya calendar. The world didn't end, which is unsu...

14 Aug 20231h 9min

AMA | August 2023

AMA | August 2023

Welcome to the August 2023 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 Patr...

7 Aug 20233h 38min

245 | Solo: The Crisis in Physics

245 | Solo: The Crisis in Physics

Physics is in crisis, what else is new? That's what we hear in certain corners, anyway, usually pointed at "fundamental" physics of particles and fields. (Condensed matter and biophysics etc. are just...

31 Jul 20234h 22min

244 | Katie Elliott on Metaphysics, Chance, and Explanation

244 | Katie Elliott on Metaphysics, Chance, and Explanation

Is metaphysics like physics, but cooler? Or is it a relic of an outdated, pre-empirical way of thinking about the world? Closer to the former than the latter. Rather than building specific quantitativ...

24 Jul 20231h 36min

243 | Joseph Silk on Science on the Moon

243 | Joseph Silk on Science on the Moon

The Earth's atmosphere is good for some things, like providing something to breathe. But it does get in the way of astronomers, who have been successful at launching orbiting telescopes into space. Bu...

17 Jul 20231h 11min

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