Dark matter: The matter we can’t see - James Gillies

Check out our Patreon page: View full lesson: The Greeks had a simple and elegant formula for the universe: just earth, fire, wind, and water. Turns out there’s more to it than that -- a lot more. Visible matter (and that goes beyond the four Greek elements) comprises only 4% of the universe. CERN scientist James Gillies tells us what accounts for the remaining 96% (dark matter and dark energy) and how we might go about detecting it. Lesson by James Gillies, animation by TED-Ed.