Check out our Patreon page: https://www.patreon.com/teded View full lesson: https://ed.ted.com/lessons/how-to-build-a-dark-matter-detector-jenna-saffin More than 2 kilometers below the surface of northern Ontario, suspended in 345,000 liters of ultra-pure water, there’s a perfect sphere. Scientists continuously monitor this chamber, looking for a glimmer of light in the darkness. Why? Because that light would indicate the presence of one of the universe’s greatest mysteries: dark matter. Jenna Saffin describes how this dark matter detector works. Lesson by Jenna Saffin, animation by TED-Ed. Thank you so much to our patrons for your support! Without you this video would not be possible! Jordan Tang, Christopher Jimenez, Juan, Tracey Tobkin, Sid, emily lam, Elliot Poulin, Noel Situ, Oyuntsengel Tseyen-Oidov, Latora Slydell, Sydney Evans, Victor E Karhel, Bernardo Paulo, Eysteinn Guðnason, Andrea Feliz, Natalia Rico, Josh Engel, Bárbara Nazaré, Gustavo Mendoza, Zhexi Shan, Hugo Legorreta, PnDAA, Marcel Trompeter-Petrovic, Sandra Tersluisen, Ellen Spertus, Fabian Amels, Mattia Veltri, Quentin Le Menez, Yuh Saito, Joris Debonnet, Martin Lõhmus, Ded Rabit, Heather Slater, Dr Luca Carpinelli, Janie Jackson, Christophe Dessalles, Arturo De Leon, Eduardo Briceño, Bill Feaver, Ricardo Paredes, Jonathan Reshef, David Douglass, Grant Albert, Paul Coupe, Jen, Megan Whiteleather, Adil Abdulla, Steven LaVoy, Ryohky Araya, vivian james, Tan YH, and Brittiny Elman.