March 12th, 2015
Episode 441 of 515 episodes
Dark matter is the mysterious and invisible substance which is believed to make up most of the Universe. In the 1930s scientists noticed that the speed at which galaxies moved was at odds with the amount of material they appeared to contain. They hypothesized that much of this 'missing' matter was simply invisible to telescopes. Today astronomers and particle physicists are still fascinated by the search for dark matter and the question of what it is. Melvyn Bragg is joined by Carolin Crawford, Public Astronomer at the Institute of Astronomy, University of Cambridge and Gresham Professor of Astronomy; Carlos Frenk, Ogden Professor of Fundamental Physics and Director of the Institute for Computational Cosmology at the University of Durham and Anne Green, Reader in Physics at the University of Nottingham.
Have you trembled ‘round the campfire as the ghost stories are told? Do tales of horrors wrought by nature and beyond strike fear in your soul? Is it best when you are afraid to turn out the light? Thrill to stories that strike at your deepest fears, as host Stephen Kilpatrick brings the best of horror fiction to your ears and your mind, read to you by the most chilling narrators that podcasting has to offer. <br /> <br /> Podcasting the finest in genre fiction, Tales to Terrify is where the depths of horror reveal the truths of good, evil, and the human spirit in the District of Wonders podcast network. Like all shows in the District of Wonders, Tales to Terrify is supported by a welcoming community of dedicated fans and contributors. Subscribe today, and begin your journey through the spine-tingling depths of storytelling.<br /> <br /> Everyone has a story in the District of Wonders. Come and find yours.