It’s one of the great puzzles in astrophysics: The stars and galaxies that we can see through our best telescopes are only a small fraction of the matter that we know is out there. We know this additional “dark matter” is there because of its gravitational tug on the matter we can see. And although it’s invisible, astronomers have succeeded in mapping this unseen matter, gaining clues about the role it’s played in cosmic history. Meanwhile, particle physicists continue their experimental hunt to pin down what dark matter actually is. In this feature for CBC Radio’s Quirks & Quarks, I speak with host Bob McDonald about the quest to understand dark matter, along with clips from Richard Massey, Ray Bunker, Miriam Diamond, and Sean Tulin.
Listen via the CBC’s website.
