Why Dark Matter Matters

Why Dark Matter Matters

From NOVA Presents by GBH

June 9, 2026 · 28 min · Season 6 · Episode 1

About this episode

David Kaiser discusses the mysteries of dark matter and its implications for our understanding of the universe.

David Kaiser knows the universe is hiding something enormous – and no one can see it. Dark matter appears to be all over our universe, but what is it? As a physicist and science historian, David joins Hakeem to discuss one of astrophysics most impossible puzzles. Nearly a century of observations - from the motion of galaxy clusters to the rotation of individual galaxies to the subtle patterns in the cosmic microwave background - has built a remarkably consistent case that most of the matter in the universe is invisible to us. Kaiser and Hakeem work through how that evidence accumulated, why the leading candidate explanations have become increasingly constrained, and one tantalizing idea that is getting physicists excited. Make sure to subscribe now so you never miss an episode. Learn more about NOVA and visit YouTube channel. -------------------------- Guest Bio: David Kaiser is a professor of physics and the history of science at MIT. His research spans the history of modern physics, cosmology, and the foundations of quantum theory. He is the author of several books, including How the Hippies Saved Physics, and is a frequent contributor to public conversations about science and…

People in this episode

Host: Hakeem

Guest: David Kaiser

Topics covered

  • dark matter
  • astrophysics
  • cosmology
  • quantum theory
  • universe
  • science history

Keywords

  • dark matter
  • universe
  • galaxy clusters
  • cosmic microwave background
  • astrophysics
  • science history

Mentioned in this episode

Organizations: MIT

Books & works: How the Hippies Saved Physics

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