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(418)

79 | Sara Imari Walker on Information and the Origin of Life

79 | Sara Imari Walker on Information and the Origin of Life

We are all alive, but "life" is something we struggle to understand. How do we distinguish a "living organism" from an emergent dynamical system like a hurricane, or a resource-consuming chemical reac...

13 Jan 20201h 23min

78 | Daniel Dennett on Minds, Patterns, and the Scientific Image

78 | Daniel Dennett on Minds, Patterns, and the Scientific Image

Wilfrid Sellars described the task of philosophy as explaining how things, in the broadest sense of term, hang together, in the broadest sense of the term. (Substitute "exploring" for "explaining" and...

6 Jan 20202h 1min

Holiday Message 2019: On Publishing Books

Holiday Message 2019: On Publishing Books

Welcome to the second annual Mindscape Holiday Message! No substantive content or deep ideas, just me talking a bit about the state of the podcast and what's on my mind. Since the big event for me in ...

22 Des 20191h 6min

77 | Azra Raza on The Way We Should Fight Cancer

77 | Azra Raza on The Way We Should Fight Cancer

In the United States, more than one in five deaths is caused by cancer. The medical community has put enormous resources into fighting this disease, yet its causes and best treatments continue to be a...

16 Des 20191h 22min

76 | Ned Hall on Possible Worlds and the Laws of Nature

76 | Ned Hall on Possible Worlds and the Laws of Nature

It's too easy to take laws of nature for granted. Sure, gravity is pulling us toward Earth today; but how do we know it won't be pushing us away tomorrow? We extrapolate from past experience to future...

9 Des 20191h 25min

75 | Max Tegmark on Reality, Simulation, and the Multiverse

75 | Max Tegmark on Reality, Simulation, and the Multiverse

We've talked a lot recently about the Many Worlds of quantum mechanics. That's one kind of multiverse that physicists often contemplate. There is also the cosmological multiverse, which we talked abou...

2 Des 20191h 11min

74 | Stephen Greenblatt on Stories, History, and Cultural Poetics

74 | Stephen Greenblatt on Stories, History, and Cultural Poetics

An infinite number of things happen; we bring structure and meaning to the world by making art and telling stories about it. Every work of literature created by human beings comes out of an historical...

25 Nov 20191h 6min

73 | Grimes (c) on Music, Creativity, and Digital Personae

73 | Grimes (c) on Music, Creativity, and Digital Personae

Changing technologies have always affected how we produce and enjoy art, and music might be the most obvious example. Radio and recordings made it easy for professional music to be widely disseminated...

18 Nov 20191h 18min

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